STARTECH 

STARTECH C21GA-USB-ETHERNET USB C to Ethernet Adapter

Mfg Part Number:  C21GA-USB-ETHERNET  
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Price: $33.05
Quantity:
In Stock: 936
Last Updated: Dec 07, 2025
No Sales Tax except these states
, PO and Wire.

Add a Gigabit network port to your computer, using a USB Type-C connection. The RJ45 port supports multiple speeds (10/100/1000 Mbps) and is fully compatible with Cat5 (and higher) cabling. Share or receive files over a network, access network storage/backup, and stream online content while reducing wait times and slowdowns.

1 Gigabit Network Connection

This adapter supports both current and legacy Ethernet networks down to 10Mbps, making it ideal for providing a reliable network connection almost anywhere whether at home, work or while traveling. The USB-C host connector with attached USB-C to USB-A dongle offers compatibility with laptops, desktop computers, and 2-in-1's. The Realtek chipset is broadly supported on new and older laptops enabling PXE capabilities to aid IT departments with provisioning and maintaining systems along with Wake-on-LAN (WoL) support. The adapter provides a wired connection that is faster and more secure than wireless, making it ideal for IT professionals.

Plug and Play Device Configuration

Simply connect the network adapter to your computer's USB Type-C port. This USB-C to RJ45 adapter features VLAN tagging, 9K Jumbo Frames, Wake-on-LAN, Status LEDs and full-duplex Ethernet making it the perfect companion for on-the-go users who require a wired network connection.

Compact and Versatile Design

The USB Gigabit network adapter is light and compact. It features a built-in 6in (15cm) cable provides extended reach and improved flexibility, while reducing cable/connector strain. Additionally, USB bus power simplifies the setup and makes it a convenient accessory while on the move.

Main Specification
General Information
Manufacturer StarTech.com
Manufacturer Part Number C21GA-USB-ETHERNET
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name Gigabit Ethernet Adapter
Packaged Quantity 1
Product Type Gigabit Ethernet Adapter
Technical Information
Chipset Manufacturer Realtek
Chipset Model RTL8153B
Features PXE Support
Features VLAN Tagging
Features Promiscuous Mode
Features Jumbo Frames Support
Features Wake on LAN (WOL)
Interfaces/Ports
Host Interface USB 3.2 (Gen 1) Type C
Total Number of Ports 1
USB Standard USB 3.2 (Gen 1) Type C
Number of Network (RJ-45) Ports 1
Media & Performance
Media Type Supported Twisted Pair
Maximum Data Transfer Rate 5 Gbit/s
Network & Communication
Network Technology 10/100/1000Base-T
Environmental Conditions
Minimum Operating Humidity (Non-condensing) 10%
Maximum Operating Humidity (Non-condensing) 85%
Physical Characteristics
Color Family Gray
Product Color Gray
Form Factor Portable
Width 0.8"
Weight (Approximate) 0.90 oz
Miscellaneous
Package Contents
  • Gigabit Ethernet Adapter
  • USB-A Adapter
Application/Usage Network
Device Supported Desktop Computer/Notebook
Operating System Compatibility Windows 8
Operating System Compatibility macOS 10.15 Catalina
Operating System Compatibility Mac OS 14 Sonoma
Operating System Compatibility Windows Server 2008 R2
Operating System Compatibility Linux Kernel 2.4.20
Operating System Compatibility Apple iOS
Operating System Compatibility Windows 11 ARM
Operating System Compatibility Mac OS 11 Big Sur
Operating System Compatibility Windows 7
Operating System Compatibility Windows Server 2022
Operating System Compatibility Mac OS 12 Monterey
Operating System Compatibility Mac OS 13 Ventura
Operating System Compatibility Windows Server 2012 R2
Operating System Compatibility Windows 8.1
Operating System Compatibility Mac OS 10.11 El Capitan
Operating System Compatibility Windows 10
Operating System Compatibility Windows 11
Operating System Compatibility Windows Server 2016
Warranty
Limited Warranty 2 Year
WARNING:: The plastic used in cable products can expose you to lead and lead components, chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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