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Imagine staring at your sleek laptop with only one USB port left, surrounded by a tangle of external drives, monitors, and peripherals screaming for connection. That frustration is all too real in today’s workspace, where the demand for seamless data transfer and expanded connectivity has never been higher. USB 3.0 hubs promise a lifeline, offering significantly faster speeds than their predecessors—but navigating the sea of options can feel overwhelming. The key isn’t just finding any hub; it’s understanding which features genuinely deliver on the promise of reliable, high-speed data transfer without turning your desk into a power strip jungle.
Let’s cut through the marketing noise. Forget chasing “top 10 lists” that become obsolete by next quarter or prioritizing flashy specs over real-world usability. True value lies in a hub that aligns with your specific workflow, whether you’re shuttling massive video files, connecting multiple high-resolution displays, or simply needing stable peripheral support for daily tasks. This guide dives deep into the practical considerations that matter—power delivery, port configuration, and technical nuances often glossed over in quick reviews. By focusing on what actually impacts your speed and reliability, you’ll invest in a solution built to last, not just a temporary fix.
Top 10 USB 3.0 Hubs
Detailed Product Reviews
1. Anker USB Hub 4 Ports, Multiple USB 3.0 Hub, USB Splitter for Laptop, Extender for A Port Laptop, PC, Desktop and More Charging Not Supported
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1. Anker USB Hub 4 Ports, Multiple USB 3.0 Hub, USB Splitter for Laptop, Extender for A Port Laptop, PC, Desktop and More Charging Not Supported
Overview: This ultra-slim Anker USB 3.0 hub expands a single USB-A port into four, focusing purely on high-speed data transfer for laptops, desktops, and compatible consoles. It’s designed for users needing port expansion without charging functionality, backed by Anker’s reputation and warranty. What Makes It Stand Out: Anker leverages its trusted brand (80M+ users) and emphasizes SuperSpeed 5Gbps data transfer—ideal for quick HD movie transfers. Its precision heat-resistant build ensures durability during sustained use, and the included 18-month warranty with responsive support adds significant peace of mind. Value for Money: Priced competitively for a no-frills data hub, it excels if you only need port expansion. While cheaper hubs exist, Anker’s proven reliability, robust construction, and warranty justify a slight premium over budget options lacking brand assurance. Strengths and Weaknesses: Strengths: Blazing 5Gbps speeds; exceptional slimness and portability; reliable build quality; plug-and-play simplicity; strong warranty. Weaknesses: No charging capability whatsoever; limited to four ports; not suitable for power-hungry peripherals like external HDDs without their own power. Bottom Line: An excellent, dependable choice for basic USB data expansion where charging isn’t needed. Ideal for travelers or office users prioritizing portability and Anker’s quality assurance over power delivery.
2. Acer USB Hub 4 Ports, Multiple USB 3.0 Hub, USBA Splitter for Laptop with Type C Power Port, Extender for A Port Laptop, PC, Desktop and More (2ft)
Overview: Acer’s 4-port USB 3.0 hub offers expanded connectivity with a crucial addition: a dedicated 5V USB-C power port. This design caters to users needing reliable data transfer for peripherals, especially external storage, while ensuring stable operation under load. What Makes It Stand Out: The integrated USB-C power input is its key differentiator, mandatory for stable high-speed transfers with power-hungry devices like HDDs. Featuring the GL3510 chip for thermal management and data safety, plus a status LED and broad OS compatibility (Windows, macOS, ChromeOS, Linux, consoles), it balances functionality and robustness. Value for Money: A smart investment if you regularly use external drives. The slight premium over non-powered hubs is well justified by the essential power port preventing data corruption or disconnections during intensive tasks, offering better long-term reliability. Strengths and Weaknesses: Strengths: Essential USB-C power port for HDDs; stable GL3510 chip; wide OS/console compatibility; portable slim design; clear status LED. Weaknesses: Power cable adds slight bulk; 2ft cable length may be restrictive on some setups; no dedicated charging ports for devices. Bottom Line: Highly recommended for users connecting external hard drives or needing guaranteed stability. The powered design solves a critical flaw in basic hubs, making it worth choosing over cheaper, non-powered alternatives for serious work.
3. UGREEN USB 3.0 Hub, 4 Ports USB A Splitter Ultra-Slim USB Expander for Mouse, Keyboard, Flash Drive, U Disk, Printer Compatible with Laptop, Desktop PC, Xbox, PS5, and More
Overview: UGREEN delivers an ultra-compact 4-port USB 3.0 hub prioritizing portability and universal compatibility. Its featherweight (33g) and paper-thin (0.4") design make it ideal for travelers, while supporting peripherals from flash drives to consoles like PS5 and Xbox Series. What Makes It Stand Out: Extreme miniaturization is its standout feature—among the slimmest hubs available—without sacrificing 5Gbps speeds (transferring 10GB in ~16 seconds). True plug-and-play across all major OSes and unexpected device compatibility (cars, gaming consoles) broaden its utility far beyond typical laptop use. Value for Money: Excellent value for frequent travelers or minimalists. While basic hubs are cheaper, UGREEN’s unbeatable portability, solid performance, and versatile compatibility offer superior convenience per dollar for mobile users needing reliable expansion on the go. Strengths and Weaknesses: Strengths: Unmatched slimness/portability; broad device compatibility (consoles, cars); fast 5Gbps transfer; true plug-and-play; lightweight. Weaknesses: No power input, limiting use with HDDs; very short cable may cause port strain; minimal heat dissipation during heavy use. Bottom Line: The top pick for travelers needing ultra-portable, reliable USB expansion for standard peripherals. Avoid for external HDDs, but perfect for keyboards, mice, and flash drives where space is critical.
4. TP-Link Powered USB Hub 3.0 with 7 USB 3.0 Data Ports and 2 Smart Charging USB Ports. Compatible with Windows, Mac, Chrome & Linux OS, with Power On/Off Button, 12V/4A Power Adapter(UH720)
Overview: TP-Link’s UH720 is a robust, powered 7-port USB 3.0 hub with dedicated charging. It transforms one port into seven high-speed data ports plus two intelligent charging ports, backed by comprehensive safety features and a substantial power adapter. What Makes It Stand Out: The dual functionality sets it apart: seven full-speed 5Gbps data ports and two 2.4A Smart Charging ports that auto-detect device needs. Critical safety features (overheat, surge, short-circuit protection) and hot-swap capability ensure device and data security during intensive multi-device use. Value for Money: Premium-priced but highly justifiable for power users. Offering 7 data ports plus dedicated fast charging in one unit, it eliminates the need for separate hubs/adapters. The included 12V/4A adapter and safety tech provide long-term reliability that cheaper hubs can’t match. Strengths and Weaknesses: Strengths: 7 high-speed data ports + 2 dedicated fast-charging ports; exceptional safety protections; intelligent charging; hot-swap support; robust power adapter. Weaknesses: Bulkiest unit here; 2ft cable may limit placement; higher initial cost. Bottom Line: The definitive choice for workstations or media centers needing maximum expansion, fast charging, and ironclad protection. Worth the investment for heavy multi-device users prioritizing safety and versatility.
5. Anker Powered USB Hub for Laptop, 7 Ports USB 3.0 Data Hub, with 36W Power Adapter and BC 1.2 Charging Port for iPhone 7/6s Plus, iPad Air 2, Galaxy S Series, Note Series, Mac, PC, USB-Flash Drives
Overview: Anker’s compact 7-port powered hub combines extensive expansion with targeted charging. It adds seven USB 3.0 ports (5Gbps) plus a BC 1.2 charging port, all driven by a palm-sized 36W adapter, catering to laptop users needing both data and device power. What Makes It Stand Out: Anker’s signature compact design (4.3x1.7x0.9in) packs seven ports into a travel-friendly form. The dedicated BC 1.2 port (2.1A) ensures fast charging for tablets/iPhones, while six standard ports (0.5A each) handle peripherals. Anker’s reliability and 18-month warranty reinforce trust. Value for Money: Strong value for a premium powered hub. While TP-Link offers more charging ports, Anker’s smaller footprint, Anker’s renowned build quality, and included 36W adapter make it ideal for mobile professionals seeking portability without sacrificing essential charging capabilities. Strengths and Weaknesses: Strengths: Extremely compact for 7 ports; dedicated 2.1A BC 1.2 charging port; Anker’s trusted reliability/warranty; plug-and-play; lightweight. Weaknesses: Only one high-amperage charging port; total 5.1A shared across all ports limits simultaneous heavy charging; no Smart Charging tech. Bottom Line: Best for mobile users needing maximum port expansion in a small footprint with one fast-charging port. Choose over TP-Link if portability is paramount and you primarily charge one device (like a tablet) alongside peripherals.
6. SABRENT 10-Port 60W USB 3.0 Hub with Individual Power Switches and LEDs, Includes 60W 12V/5A Power Adapter (HB-BU10)
Overview: The SABRENT 10-Port USB 3.0 Hub is a high-capacity solution for expanding connectivity on desktops or workstations. It delivers 60W total power via an included adapter, supporting data transfer at 5Gbps across all ports without driver installation. Its mirrored finish and compact footprint aim to blend functionality with aesthetics for cluttered desks.
What Makes It Stand Out: Ten individually switchable ports with blue LED status indicators provide unparalleled control over connected devices, reducing power drain when peripherals are idle. The robust 60W adapter reliably powers multiple high-demand devices like external HDDs simultaneously—uncommon in hubs at this port count—while the sleek mirrored design elevates its visual appeal beyond typical utilitarian hubs.
Value for Money: Priced competitively for a 10-port powered hub, it outperforms cheaper unpowered alternatives that throttle performance with multiple devices. The included 60W adapter eliminates the need for costly aftermarket power supplies, making it cost-effective for professionals needing extensive, stable expansion.
Strengths and Weaknesses:
Strengths: Exceptional port count; reliable per-port power management; premium build quality; plug-and-play simplicity.
Weaknesses: Shorter cable (1m) limits placement flexibility; mirrored surface attracts fingerprints; no dedicated charging port.
Bottom Line: Ideal for power users needing maximum port expansion with precise control, this hub justifies its price through reliability and thoughtful design, though mobile users may prefer more portable options.
7. ONFINIO USB Hub 3.0, 7-Port USB Hub Splitter with Individual On/Off Switches and Lights, 3.2ft/1m Long Cable Compatible with MacBook, Laptop, Surface Pro, PS4, PC, Flash Drive, Mobile HDD
Overview: The ONFINIO 7-Port USB 3.0 Hub targets mobile professionals and gamers seeking versatile expansion. Featuring individual port switches, a 1m cable, and broad OS compatibility, it transforms a single USB port into seven high-speed connections for peripherals like flash drives, controllers, and HDDs, with plug-and-play ease.
What Makes It Stand Out: Its 3.2ft (1m) cable offers superior reach over standard hubs—crucial for laptops in confined spaces—while the slim, travel-friendly design fits easily in bags. The seven independent on/off switches with status LEDs provide granular power control, preventing overloads when connecting power-hungry devices like HDDs without sacrificing portability.
Value for Money: Mid-priced for a 7-port powered hub, it delivers excellent utility for its cost. The extended cable and wide compatibility (including PS4/Xbox) reduce the need for additional adapters, offering better real-world value than cheaper hubs with shorter cables or fewer ports.
Strengths and Weaknesses:
Strengths: Long, flexible cable; ultra-portable build; comprehensive OS support; intuitive per-port switching.
Weaknesses: Requires external power for multiple HDDs; no dedicated fast-charging port; plastic casing feels less premium.
Bottom Line: A top choice for travelers and gamers needing reliable, spacious connectivity, this hub balances port count, cable length, and affordability, though heavy workstation users might desire higher total wattage.
8. Powered USB Hub, Wenter 11-Port USB Splitter Hub (10 Faster Data Transfer Ports+ 1 Smart Charging Port) with Individual LED On/Off Switches, USB Hub 3.0 Powered with Power Adapter for Mac, PC
Overview: The Wenter 11-Port Hub combines massive expansion (10 data ports + 1 charging port) with robust power delivery. Bundled with a 12V/3A adapter and long cables (3.3ft USB, 4ft power), it’s engineered for desktop setups requiring simultaneous connections to HDDs, keyboards, and charging devices—all at 5Gbps speeds.
What Makes It Stand Out: The dedicated 2.4A smart-charging port sets it apart, enabling fast device charging without occupying a data port. Eleven ports with individual switches and status LEDs, plus extended cable lengths, provide unmatched flexibility for complex workstations. The 12V/3A adapter ensures stable power for all peripherals, even demanding setups.
Value for Money: At a premium price, it’s justified by the rare 11-port configuration and integrated charging solution. The included lengthy cables and 24-month warranty add tangible value, outperforming 10-port competitors missing dedicated charging or sufficient wattage.
Strengths and Weaknesses:
Strengths: Largest port count reviewed; dedicated fast-charging port; ample cable lengths; strong warranty.
Weaknesses: Bulky for travel; no Mac-specific optimizations; charging port lacks USB-C.
Bottom Line: Essential for desktop power users drowning in peripherals, this hub’s scale and smart-charging capability make it a worthy investment despite its size, though overkill for casual needs.
9. Anker USB Hub 4 Ports with 5Gbps Data Transfer, Multiple USB 3.0 Hub, USB Splitter for Laptop, Extender for A Port Laptop, PC, Desktop and More Charging Not Supported
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9. Anker USB Hub 4 Ports with 5Gbps Data Transfer, Multiple USB 3.0 Hub, USB Splitter for Laptop, Extender for A Port Laptop, PC, Desktop and More Charging Not Supported
Overview: Anker’s minimalist 4-Port USB Hub focuses on ultra-portability and reliability for on-the-go laptop users. With no charging capability and a short 0.7ft cable, it prioritizes data transfer at 5Gbps for peripherals like mice, drives, and card readers, leveraging Anker’s reputation for durable electronics.
What Makes It Stand Out: Anker’s signature rugged build—engineered for heat resistance and drop protection—makes it exceptionally travel-ready. The “ultra-slim” design slips invisibly into laptop bags, while the brand’s 18-month warranty and trusted performance inspire confidence absent in generic hubs.
Value for Money: Priced slightly above budget hubs, it’s justified by Anker’s longevity and reliability. For frequent travelers, the reduced risk of failure offsets the cost, though those needing charging ports or more ports should look elsewhere.
Strengths and Weaknesses:
Strengths: Extremely compact and durable; reliable plug-and-play; trusted brand support; efficient heat management.
Weaknesses: No charging capability; very short cable; only 4 ports limits expansion.
Bottom Line: The go-to for road warriors wanting a no-fuss, durable data hub, but its limitations make it unsuitable for users needing device charging or extensive peripheral support.
10. Atolla 4-Port USB 3.0 Hub with 4 Data Ports, 1 Smart Charging Port, Individual On/Off Switches and 5V/3A Adapter
Overview: Atolla’s 5-in-1 hub (4 data ports + 1 charging port) delivers balanced expansion for laptop users. It combines 5Gbps data speeds with a dedicated 2.4A charging port, individual port switches, and a glossy UV finish, targeting users who need both peripheral connectivity and device charging from a single hub.
What Makes It Stand Out: The integration of a dedicated charging port alongside four data ports in a compact 4-port hub is rare. Illuminated individual switches and a generous 25.59-inch cable offer convenience, while the sleek UV-coated casing provides a premium look uncommon at this price point.
Value for Money: Competitively priced for a 5-in-1 hub, it eliminates the need for separate chargers or hubs. The included 5V/3A adapter and 18-month warranty enhance its appeal versus bare-bones alternatives, offering holistic value for home or office use.
Strengths and Weaknesses:
Strengths: Dedicated fast-charging port; elegant design; per-port control; strong cable durability.
Weaknesses: Limited to 4 data ports; charging port not USB-C; glossy finish shows smudges.
Bottom Line: Perfect for users juggling peripherals and device charging, this hub excels as an all-in-one desktop companion, though its port count may constrain heavy multitaskers.
Understanding USB 3.0 Specifications and Real-World Performance
Decoding USB 3.0 vs. 3.1 vs. 3.2 Labels
Manufacturers often use terms like USB 3.0, 3.1 Gen 1, or 3.2 Gen 1 interchangeably—they all refer to the same 5 Gbps maximum theoretical speed. Don’t be misled by higher-numbered labels implying faster performance for standard USB-A hubs. True speed jumps (10 Gbps or 20 Gbps) require USB-C implementations with specific protocols, not typical multi-port USB-A hubs. Focus on the core 5 Gbps capability as your baseline expectation.
Why Theoretical Speeds Rarely Match Reality
That advertised 5 Gbps (625 MB/s) is a best-case scenario under ideal lab conditions. Real-world transfer rates are consistently lower due to protocol overhead, cable quality, host controller limitations, and the speed of your connected devices. Expect sustained speeds closer to 300-400 MB/s with quality hardware. Managing these expectations prevents disappointment when your hub doesn’t hit the theoretical peak.
The Critical Role of the Host Controller
Your computer’s internal USB host controller is the unsung hero (or bottleneck). Older systems or budget laptops might use controllers that can’t fully utilize the hub’s potential, capping speeds below 5 Gbps. Research your device’s chipset specifications—Intel, Renesas, or ASMedia controllers generally offer more reliable performance than lesser-known brands embedded in cheap hubs.
Port Configuration: Matching Layout to Your Workflow
Single Downstream Port vs. Multiple Ports: The Speed Trade-Off
Hubs with a single downstream port connected to your computer can often deliver near-full 5 Gbps bandwidth to one device. Multi-port hubs (3, 4, 7 ports) share that total bandwidth across all active ports. If you regularly connect multiple high-speed devices simultaneously (like two SSDs), a hub with dedicated controller chips per port group is essential to avoid severe slowdowns.
Essential Port Types Beyond Standard USB-A
Don’t overlook hubs integrating USB-C ports—even if your current devices use USB-A. A USB-C upstream port (connecting to your computer) often provides more stable power and data negotiation. Downstream USB-C ports add vital flexibility for newer peripherals and support Alternate Modes for video output, future-proofing your setup beyond simple data transfer.
The Hidden Need for Dedicated Charging Ports
Not all ports are created equal. Look for hubs with at least one port designated for “charging-only” (often labeled with a battery icon). These bypass data bandwidth limits to deliver higher power (typically 5V/2.4A) for phones and tablets, preventing slow charging when data ports are saturated. This separation ensures your phone doesn’t drag down critical data transfers.
Avoiding the “Daisy-Chaining” Trap
Connecting one hub to another (daisy-chaining) multiplies bandwidth sharing and introduces latency. Most USB specifications technically allow it, but performance often plummets, especially with high-speed devices. For more than 7 ports, prioritize a single, well-designed hub with sufficient power over chaining cheaper models.
Power Delivery: The Non-Negotiable Foundation
Why Bus-Powered Hubs Fail Under Load
“Bus-powered” hubs draw all their energy from your computer’s USB port. While convenient for mice and keyboards, they lack the juice for multiple external drives or high-power peripherals. Attempting to run an SSD and a phone simultaneously often causes disconnects or error messages (“This device cannot start”). Always opt for a hub with an external power adapter for serious data work.
Calculating Your Power Requirements
Add up the power needs (in watts) of all devices you’ll connect simultaneously. A single 2.5" SSD typically needs 5-10W, a phone charging needs 5-18W, and a keyboard/mouse might need 1-2W. Choose a hub whose power adapter (measured in Watts or Volts x Amps) exceeds this total by at least 20%. Underpowered hubs throttle data speeds to conserve energy.
The Safety Net of Over-Current Protection
Quality hubs include circuitry that detects power surges or short circuits, instantly cutting power to a faulty port to protect your computer and devices. This isn’t just about convenience—it’s critical hardware insurance. Verify this feature is explicitly mentioned; it’s often omitted in budget models.
Build Quality and Reliability Factors
The Importance of Metal Casings and Strain Relief
Plastic hubs flex and crack, especially when multiple heavy cables are plugged in. A sturdy aluminum or reinforced plastic casing dissipates heat better (crucial for sustained transfers) and resists physical damage. Equally vital is robust strain relief where cables meet ports—flimsy connections are the #1 cause of intermittent failures over time.
Internal Component Quality: What’s Under the Hood
Reputable brands use EMI-shielded PCBs and high-grade connectors to minimize signal interference, which corrupts data and slows transfers. While you can’t see this, research brands known for strict component sourcing. Hubs priced significantly below market average often cut corners here, leading to dropped connections during large file transfers.
Heat Dissipation Design Matters More Than You Think
Continuous high-speed data transfer generates heat. Hubs lacking ventilation slots, thermal pads, or metal casings to draw heat away will throttle speeds dramatically to prevent overheating. Look for designs with visible散热 features—this is non-negotiable for reliability during long transfer sessions.
Future-Proofing Your Investment
USB-C Compatibility as a Bridge to Tomorrow
Even if your current setup relies on USB-A, a hub with downstream USB-C ports prepares you for next-gen peripherals. Ensure these ports support USB 3.0+ speeds (not just USB 2.0) and, ideally, Power Delivery (PD) for charging laptops. This small premium pays off when you upgrade devices in 2-3 years.
Firmware Upgradability for Longevity
Advanced hubs offer firmware updates via software to fix bugs or improve compatibility with new operating systems. While rare in budget models, this feature significantly extends a hub’s usable life. Check manufacturer support pages—if they provide firmware tools, it signals a commitment to product longevity.
Setup and Troubleshooting Best Practices
Optimizing Cable Length and Quality
Use the shortest high-quality USB 3.0 cables possible between your hub, computer, and devices. Longer cables (over 1m/3ft) or poor-shielded cables introduce signal degradation, reducing effective speed. Look for cables with thick, braided sleeves and ferrite cores near the connectors for best results.
Resolving Common “Device Not Recognized” Errors
This often stems from insufficient power or driver conflicts. First, ensure the hub’s power adapter is plugged in. Next, try connecting the hub directly to a rear motherboard USB port (not a front panel or monitor port), as these often have cleaner power delivery. Updating your computer’s USB controller drivers is also a critical step many overlook.
Managing Bandwidth Allocation for Multiple Devices
When copying files from two external SSDs simultaneously through a hub, performance will dip. For critical tasks, stagger high-bandwidth operations—copy from one drive at a time. High-end hubs with individual port controllers mitigate this, but it’s still a physical limitation of shared bandwidth.
Frequently Asked Questions
Frequently Asked Questions
Can a USB 3.0 hub work with older USB 2.0 devices?
Yes, USB 3.0 hubs maintain full backward compatibility. USB 2.0 devices will function correctly but operate at their native 480 Mbps speed, without affecting other high-speed ports on the hub.
Do I need a powered hub for a keyboard and mouse?
For low-power devices like keyboards, mice, or card readers, a bus-powered hub is usually sufficient. However, adding even one high-power device (like an external SSD) necessitates an externally powered hub to avoid instability.
Why is my transfer speed slower than 5 Gbps?
Multiple factors contribute: protocol overhead (typically 20-30% loss), the write speed of your source/destination drives, cable quality, host controller limitations, and simultaneous usage of multiple ports sharing bandwidth. Sustained speeds of 300-400 MB/s are common with good hardware.
Can USB hubs charge laptops?
Standard USB 3.0 hubs cannot charge laptops, as they lack the necessary Power Delivery (PD) negotiation and wattage (usually 60W+). Only specialized hubs with USB-C PD input and output ports, using a high-wattage adapter, support laptop charging—verify PD wattage compatibility carefully.
Is USB 3.0 fast enough for 4K video editing?
For editing directly from an external SSD via a quality USB 3.0 hub, yes—most 4K video bitrates stay well below 400 MB/s. However, real-time playback of multiple high-bitrate streams or RAW footage may require Thunderbolt or internal SSDs for smoother performance.
Does the hub’s brand affect data security?
Reputable brands implement proper data isolation between ports, preventing devices from interacting in ways that could enable data theft. Cheap, no-name hubs might lack this, posing a theoretical risk. Stick to established manufacturers for sensitive work.
How do I know if my computer supports USB 3.0?
Check your computer’s specifications online or look for blue plastic inside the USB port (the universal indicator for USB 3.0+). On Windows, Device Manager > System Devices will list “xHCI” host controllers for USB 3.0+.
Can I use a USB hub with a gaming console?
Most consoles support hubs for controllers and headsets, but bandwidth-intensive peripherals (like external SSDs for game storage) may not function reliably due to console OS limitations. Always check your console’s official compatibility guidelines first.
Why does my hub get warm during use?
Mild warmth is normal during sustained data transfers due to electrical resistance. However, excessive heat (too hot to touch) indicates poor heat dissipation or an overloaded power supply, which can lead to speed throttling or failure—ensure adequate ventilation.
Will a USB 3.0 hub work with USB4 or Thunderbolt 4 ports?
Yes, but it will operate at USB 3.0 speeds (5 Gbps), not the full potential of USB4/Thunderbolt (40 Gbps). For maximum speed, use a hub specifically designed for USB4/Thunderbolt with the appropriate certification—standard USB 3.0 hubs won’t leverage the higher bandwidth.