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Elecom USB3.0 hub [with magnet] (7 Port Self & bus-powered black) U3H-T706SBK
エレコム(ELECOM)

Elecom USB3.0 hub [with magnet] (7 Port Self & bus-powered black) U3H-T706SBK

Bottom line: The Elecom USB3.0 hub U3H-T706SBK: Magnet mount holds the hub to steel surfaces like PC case panels and metal desk frames; main trade-off: only 3 of the 7 ports support USB 3.0 speeds; the other 4 are USB 2.0/1.1.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ Magnet mount holds the hub to steel surfaces like PC case panels and metal desk frames
  • ✓ 7 ports total: 3 USB 3.0 at up to 5 Gbps plus 4 USB 2.0/1.1 for peripherals
  • ✓ AC adapter included for self-powered use with external hard drives
  • ✓ Also runs bus-powered from the host when you leave the adapter at home
  • ✓ 1 m cable reaches from a tower under the desk up to your work surface

Cons

  • ✗ Only 3 of the 7 ports support USB 3.0 speeds; the other 4 are USB 2.0/1.1
  • ✗ Tops out at 5 Gbps; no 10 Gbps ports are listed
  • ✗ Magnet won't hold on aluminum, wood or glass surfaces
  • ✗ Upstream connector type isn't stated; check that it fits your PC's port

Manufacturer description

The ELECOM U3H-T706SBK is a 7-port USB 3.0 hub that stays where you put it. A strong magnet in the housing holds it to any steel surface, such as a PC case side panel, a metal desk frame or a monitor stand. It won't slide off the desk when you pull a cable. The ports are split by job. Three USB 3.0 ports run at up to 5 Gbps (theoretical) for USB 3.0 flash drives and external hard disk drives. Four USB 2.0/1.1 ports handle devices that don't need high-speed transfer, like your mouse and keyboard. That keeps the fast ports free for storage. You can power the hub two ways. Plug in the included…

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SpecPicks Verdict

SpecPicks scored Elecom USB3.0 hub U3H-T706SBK using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. エレコム(ELECOM)'s accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How many of the 7 ports are USB 3.0?

Three ports are USB 3.0 SuperSpeed, rated up to 5 Gbps (theoretical). The other four are USB 2.0/1.1 ports meant for low-bandwidth devices like a mouse or keyboard.

Will the magnet stick to my PC case?

It holds to steel surfaces, so a steel case panel or metal desk frame works. It won't hold on aluminum, glass or wood, so check what your case is made of first.

Do I need to use the AC adapter?

No. The hub works both self-powered and bus-powered. The AC adapter is included, and it's the better choice for power-hungry devices like external hard disk drives.

Does it work with a computer that only has USB 2.0 ports?

Yes. On a USB 2.0 port it runs at High Speed, up to 480 Mbps (theoretical). On a USB 1.1 port it runs at Full Speed, up to 12 Mbps.

How big is the hub and how long is the cable?

The hub measures W161 x D35 x H30 mm, not counting the cable. The cable is 1 m long.

Key Features

  • Size: W161 x D35 x H30mm (without a cable)
  • Interface: USB3.0 (Operates with USB2.0 compatibility when USB2.0 interface is connected, works with USB 1.1 compatible when USB 1.1 interface is connected)
  • Power system: Supports both self and bus with AC adapter
  • Maximum transfer rate: USB3.0 Super Speed / 5 Gbps (theoretical value,) USB2.0 High Speed / 480 Mbps (theoretical value,) USB 1.1 full speed 12 Mbps (theoretical value)

Full Specifications

SizeW161 x D35 x H30mm (without a cable)
Brandエレコム(ELECOM)
ColorBlack
InterfaceUSB3.0 (Operates with USB2.0 compatibility when USB2.0 interface is connected, works with USB 1.1 compatible when USB 1.1 interface is connected)
ConnectivityUSB
Model NumberU3H-T706SBK
Power systemSupports both self and bus with AC adapter
Mfr Part NumberU3H-T706SBK
Number of Items1
Number of Ports7
Special FeaturePowered
Total Usb Ports7
Compatible DevicesDigital Cameras, Gaming Consoles, Keyboards, Routers, Smartphones, Tablets
Data Transfer Rate5 gigabits_per_second
Enclosure MaterialAluminum
Hardware InterfaceUSB 3.0
Additional FeaturesPowered
Maximum transfer rateUSB3.0 Super Speed / 5 Gbps (theoretical value,) USB2.0 High Speed / 480 Mbps (theoretical value,) USB 1.1 full speed 12 Mbps (theoretical value)
Item Dimensions L x W x H6.34"L x 1.38"W x 1.18"H

Ready to buy?

Elecom USB3.0 hub [with magnet] (7 Port Self & bus-powered black) U3H-T706SBK is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Elecom USB3.0 hub [with magnet] (7 Port Self & bus-powered black) U3H-T706SBK
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