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Small gray USB-C to Ethernet adapter with RJ45 port

Cable Matters 201213-GRY USB-C to Ethernet Adapter 1Gbps PXE MAC Clone Thunderbolt Network Gray

SKU CH-J258-WJ1XW

Adds wired Gigabit Ethernet to USB-C laptops with PXE boot and MAC cloning support

  • ColorGray
  • Weight25.515 grams
  • Adds wired Gigabit Ethernet to USB-C laptops for faster, more secure connections than Wi-Fi
  • Driver-free setup on Chrome, Mac and Windows with native OS support
  • Supports PXE boot and MAC address clone via Windows utility for managed networks
  • Thunderbolt 3 port compatible with Dell XPS 12/13/15, Latitude, Precision and Alienware 13/15/17
  • Lightweight 25.515 g gray adapter ideal for travel and Wi-Fi dead zones

USB-C to Gigabit Ethernet Adapter

The Cable Matters 201213-GRY adds a wired 1000 Mbps network port to laptops that only have a USB-C connector. It works with MacBook Pro, Dell XPS, Surface Pro and similar ultra-thin devices. The adapter supports USB 3.1 data rates up to 5 Gbps and falls back to 10/100 Mbps networks when required.

Wake-on-LAN PXE and MAC Clone Features

Native drivers in Chrome, Mac and Windows enable driver-free installation. The adapter supports Wake-on-LAN, full-duplex and half-duplex modes, crossover detection, backpressure routing and Auto-MDIX. Preboot Execution Environment (PXE) allows network booting, while the Cable Matters EZ-Dock utility on Windows provides MAC address pass-through and cloning.

Thunderbolt 3 Compatibility and Port Limits

The adapter weighs 25.515 grams and connects directly to USB-C or Thunderbolt 3 ports on Dell XPS 12, 13, 15, Latitude, Precision and Alienware 13, 15, 17 models. It provides a single RJ45 port with no Power Delivery or additional USB ports. Buyers who need charging passthrough or multiple Ethernet connections should choose a hub or docking station instead.

Highlights

  • Adds wired Gigabit Ethernet to USB-C laptops for faster, more secure connections than Wi-Fi
  • Driver-free setup on Chrome, Mac and Windows with native OS support
  • Supports PXE boot and MAC address clone via Windows utility for managed networks
  • Thunderbolt 3 port compatible with Dell XPS 12/13/15, Latitude, Precision and Alienware 13/15/17
  • Lightweight 25.515 g gray adapter ideal for travel and Wi-Fi dead zones

Specifications

BrandCable Matters
Model201213-GRY
ColorGray
Weight25.515 grams

Questions about this item

Will the USB-C port or RJ45 connector wear out from daily plugging?

The adapter weighs 25.515 grams and uses a standard USB-C plug and RJ45 jack rated for typical insertion cycles; no moving parts require replacement.

What limits sustained throughput on a 1000 Mbps link?

The USB 3.1 Gen 1 interface caps at 5 Gbps, so the 1000 Mbps Ethernet port is the bottleneck under continuous load.

Does the adapter get hot or draw much power during all-day use?

It draws power from the host USB-C port, has no fan, and the lightweight aluminium casing dissipates heat passively during extended operation.

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