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Black USB 3.0 male to RJ45 female Gigabit Ethernet adapter

Transway's Marketplace

Transway's Marketplace USB 3.0 to Ethernet RJ45 Gigabit Adapter Black

SKU CH-5MQ8-JNJX4

Adds a gigabit RJ45 port to laptops, tablets or Nintendo Switch via USB 3.0 for wired 10/100/1000 Mbps networking

  • VariantAdapter
  • Product colorBlack
  • Gigabit wired speeds up to 1000 Mbps via USB 3.0 5 Gbps bus
  • Adds RJ45 port to Ultrabook, MacBook Air or Nintendo Switch
  • Protects or replaces a damaged built-in Ethernet port
  • Works with Windows 8.1, Mac OS X 10.6–10.12, Linux kernel 2.6/3.x, Chrome OS
  • USB powered with link and activity LEDs, backward compatible with USB 2.0/1.1

USB 3.0 Gigabit Ethernet Adapter for Laptops

This compact adapter adds a wired RJ45 network port to devices that lack one, such as ultrabooks, tablets and the Nintendo Switch. It connects through a standard USB 3.0 Type-A socket and is immediately recognised by Windows, macOS, Linux and Chrome OS without extra drivers. The link and activity LEDs give instant visual confirmation of a live connection.

Passive Cooling and Bus-Powered Operation

The unit draws all its power from the USB port, so no external supply is needed. With no moving parts it runs silently and stays cool during sustained 1000 Mbps transfers. Energy Efficient Ethernet (IEEE 802.3az) reduces idle power draw, and the adapter falls back to USB 2.0 or 1.1 speeds when plugged into older ports.

Portable Upgrade for Wired Reliability

The adapter protects a built-in Ethernet port from wear or replaces a damaged one without opening the chassis. It supports IEEE 802.3, 802.3u and 802.3ab standards for broad switch and router compatibility. Buyers who need multi-gigabit speeds beyond 1 Gbps or who rely on Windows RT and Android devices will not be served by this model.

How it compares

Measured against everything we stock in USB Adapter Cables & Dongles, at today’s prices. Recalculated every night.

Price $39.99
Pricier than about 90% of the 1,430 comparable items (median $14.99).

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Specifications

Product
Brand nameUGREEN
Product colorBlack
More details
VariantAdapter

Questions about this item

How do I install the USB 3.0 to RJ45 Gigabit adapter on my laptop?

Plug the USB 3.0 male Type-A connector into a free USB 3.0 port, then connect an RJ45 Ethernet cable to the female port. The step people miss is using a USB 2.0 port, which caps the link at 100 Mbps instead of 1000 Mbps.

What maintenance or replacement will this adapter need over time?

No scheduled maintenance is required. The USB-powered design has no internal battery or moving parts. If the RJ45 jack or USB plug wears out from repeated insertion, replace the whole adapter.

What limit appears first during sustained high-throughput transfers?

The USB 3.0 bus ceiling of 5 Gbps is the first bottleneck. The Gigabit Ethernet side runs at 1000 Mbps, so continuous traffic saturates the USB link before the network port reaches its maximum.

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