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Small black USB-A to RJ45 adapter with short flexible cable

No Sew

No Sew TU3-ETG USB 3.0 to Gigabit Ethernet Adapter Black

SKU CH-MF7N-DXSWQ

Adds a gigabit RJ45 port over USB 3.0 with a 12.7 cm cable, supports full-duplex 2Gbps link capability, Windows 10/8.1/8/7 and Mac OS X 10.6-10.15

  • Product colorBlack
  • Product weight25 g
  • Adds a wired RJ45 port via USB-A for stable low-latency networking up to 1Gbps
  • Full-duplex link capability up to 2Gbps (1Gbps send plus 1Gbps receive) over USB 3.0
  • Works with Windows 10, 8.1, 8, 7 and Mac OS X 10.6 through 10.15
  • Compact travel-ready design with 12.7 cm flexible USB cable fits tight spaces
  • USB powered no external adapter required ideal for damaged ports or devices without RJ45

Wired Ethernet for USB-A devices

The TU3-ETG adapter adds a standard RJ45 port to laptops or desktops that lack built-in Ethernet. It connects through a USB-A 3.0 socket and draws power directly from the bus. Windows 10, 8.1, 8, 7 and Mac OS X 10.6 through 10.15 are supported. The 25 gram unit includes a 12.7 cm flexible cable for tight spaces.

Driver installation and USB version

A driver disc is supplied for systems that do not load the class driver automatically. On Windows 10 the adapter usually installs without extra steps; older releases may need the disc. The device is backward compatible with USB 2.0 and 1.1 ports, though throughput will be limited by the slower host interface. Verify the host port type before expecting full performance.

Sustained throughput on gigabit networks

Over USB 3.0 the link can run full-duplex at 1Gbps transmit and 1Gbps receive simultaneously. Real-world file transfers and backups benefit from the reduced bottleneck compared with single-direction limits. Actual speed remains dependent on the network infrastructure and ISP provisioning. On USB 2.0 hosts the sustained rate drops to the host controller ceiling.

How it compares

Measured against everything we stock in Network Adapters & RJ45 Plugs, at today’s prices. Recalculated every night.

Price $22.99
Pricier than about 58% of the 1,221 comparable items (median $19.99).

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Specifications

Product
Model nameTU3-ETG
Product colorBlack
Size & build
Product weight25 g

Questions about this item

How can I confirm the TU3-ETG is delivering the full-duplex 2Gbps link after setup?

Connect it to a USB 3.0 port and a gigabit network, then run a speed test; you should see up to 1Gbps transmit and 1Gbps receive simultaneously when the link is working as intended.

What comes in the box with the TU3-ETG and what must I provide?

The package includes the TU3-ETG adapter with its integrated 12.7 cm USB cable, a quick installation guide, and a driver disc; you only need to supply a standard RJ45 Ethernet cable.

Should I choose the TU3-ETG if my laptop only has USB 2.0 ports?

Yes, the adapter is backward compatible with USB 2.0 and 1.1, but throughput will be limited by the older USB interface rather than the gigabit Ethernet capability.

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