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StarTech USB to Ethernet Adapter, 10/100Mbps RJ45 Network Adapter

5.0 (3 reviews)

Posted Sep 22, 2026Updated Sep 22, 2026

$4.99$15.99

69% OFFYou save $11.00

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In Stock

Is this a good deal?

ASIN: 5c08e542-f662-4f94-8a8a-cc3ad07766c0

Great Deal

Down to $4.99 from $15.99, a 69 percent drop. This StarTech adapter adds a wired 10/100 Ethernet port to any laptop or desktop through USB. A cheap fix for weak Wi-Fi or a missing RJ45 jack.

What we like

Adds a wired RJ45 port through USB
Bus-powered, no power adapter needed
Works with Windows, macOS, and Linux
Compact enough to leave in a laptop bag

Watch out for

10/100Mbps link caps out around 100Mbps
USB-A plug needs an adapter for USB-C laptops

Tip: Keep it in your laptop bag for hotel and office wired networks, which beat spotty Wi-Fi.

Our Take

Best for: Laptop owners with a flaky Wi-Fi card or a missing Ethernet port

The StarTech USB to Ethernet adapter does one job and does it cleanly: it gives a machine without an RJ45 jack a real wired network connection. Plug the USB-A end into your laptop, run an Ethernet cable from the adapter to a wall port or router, and the machine picks up a link at 10 or 100Mbps. It draws power from the USB port, so there is no wall wart to carry around. The upside is reliability. Wired connections hold steady during video calls, large file transfers, and remote desktop sessions where Wi-Fi drops packets or wanders between access points. Driver support is broad, covering Windows, macOS, and Linux, and most systems recognize it the moment it is plugged in. The tradeoff is speed. This is a 10/100 adapter, not gigabit, so transfers top out near 100Mbps. If your connection is faster than that, you will not see the full benefit. 99 this is an easy add-on. It costs less than a coffee, weighs almost nothing, and solves a problem that otherwise means buying a dock or a new laptop. Buy it for travel and office desks where wired ports still exist.

Price Analysis

At $4.99, this adapter is $11 below the $15.99 original price, a 69 percent discount. USB Ethernet adapters in this class usually sit between $12 and $20, so this lands well under the going rate. It is a low-risk buy at this price.

Common Questions

What network speeds does this adapter support?

It negotiates 10Mbps and 100Mbps links, so a wired connection tops out around 100Mbps. That is plenty for browsing, streaming, and video calls, but it is not a gigabit adapter.

Do I need to install drivers?

Most Windows, macOS, and Linux systems recognize the adapter as soon as you plug it in. Older Windows releases may need a one-time driver install from StarTech's support page.

Will it work with a Nintendo Switch dock?

Yes. The Switch dock has a USB-A port, and the console recognizes this adapter for a wired connection in docked mode, which smooths out online matches.