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Small black USB-A dongle with short cable and RJ45 port

Cable Matters 202023-BLACK USB 2.0 to Ethernet Adapter 10/100 Mbps Black

SKU CH-12FS-21W9D

Adds 10/100 Mbps wired Ethernet via USB 2.0 with PXE and Wake-on-LAN support for Windows, macOS, Linux, and Chrome OS

  • Product colorBlack
  • Product weight1.13 oz
  • Adds 10/100 Mbps wired Ethernet to laptops without a built-in port
  • Driver-free setup on Windows, macOS, Linux and Chrome OS for instant connectivity
  • Weighs 1.13 ounces with a short cable tail for easy travel
  • Supports PXE boot, Wake-on-LAN and MAC address cloning for managed networks
  • USB 2.0 interface provides stable 100 Mbps link without needing USB 3.0

Wired LAN Adapter for USB-A 2.0 Ports

This compact USB to Ethernet adapter adds a 10/100 Mbps RJ45 port to laptops, desktops, or a Raspberry Pi 3. It draws power from the USB-A 2.0 connection and requires no external supply. Driver-free installation works on Windows, macOS, Chrome OS, and Linux. The six-inch cable tail and lightweight build suit travel or permanent desk use.

Suits Restoring Wired Connectivity on Legacy Systems

Buyers needing a simple replacement for a failed onboard Ethernet port on an older computer will find this adapter fits the purpose. It also serves well for devices lacking a built-in network jack where only 100 Mbps throughput is required. Users who need Gigabit speeds, USB-C or USB 3.0 connectivity, or Power Delivery pass-through should look at a different adapter class.

10/100 Mbps Fast Ethernet Speed Rating

The adapter negotiates at 10BASE-T or 100BASE-TX link rates, capping wired throughput at 100 Mbps. This single specification determines whether the device matches the network infrastructure and performance expectations of the installation.

How it compares

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

Price $20.99
Typical for this category: the median of 1,221 items is $19.99.

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Specifications

Product
Brand nameCable Matters
Model name202023-BLACK
Product colorBlack
Size & build
Product weight1.13 oz

Questions about this item

How can I verify the adapter is working after plugging it into my laptop?

The diagnostic LEDs on the adapter show power, link, and data status so you can confirm an active 10/100 Mbps connection.

What comes in the box and do I need any extra cables?

The package includes the USB 2.0 to Ethernet adapter with a 6-inch cable tail; you supply your own RJ45 network cable to reach the router or switch.

Should I choose this 10/100 Mbps model or the 202013 Gigabit version?

Choose this adapter when you only need 100 Mbps Fast Ethernet over USB 2.0; choose model 202013 if you require Gigabit speeds over USB 3.0 or USB-C.

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