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StarTech.com USB C to Ethernet Adapter USB 3.2 Gen 1 Gigabit C21GA-USB-ETHERNET
StarTech.com·MPN: C21GA-USB-ETHERNET

StarTech.com USB C to Ethernet Adapter USB 3.2 Gen 1 Gigabit C21GA-USB-ETHERNET

The StarTech.com C21GA-USB-ETHERNET adapter provides essential Gigabit Ethernet network connectivity to laptops and desktops via a versatile USB Type-C or Type-A port, supporting speeds up to 1000 Mbps for critical data transfers.

  • Universal Connectivity: Features both USB Type-C and Type-A host interfaces, ensuring broad compatibility with modern and legacy devices for flexible deployment.
  • Gigabit Performance: Delivers 10/100/1000 Mbps Ethernet speeds, enabling rapid data transfers and stable network access for demanding business applications.
  • Enhanced Network Control: Supports VLAN tagging and Jumbo Frames up to 9000 bytes, optimizing network traffic management and efficiency for large data packets.
  • Remote Management Ready: Includes Wake-on-LAN (WoL) functionality, allowing IT teams to remotely power on devices for maintenance and updates, reducing on-site visits.
$28.50
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Manufacturer Warranty Included

Product Overview

The StarTech.com C21GA-USB-ETHERNET is a versatile USB 3.2 Gen 1 adapter designed to add a Gigabit Ethernet port to any laptop or desktop, supporting data rates of 10, 100, and 1000 Mbps. It features a unique dual host interface, offering both USB Type-C and an integrated USB Type-A dongle for universal compatibility.

Engineered with a Realtek RTL8153B chipset, this adapter supports advanced network features like VLAN tagging and Jumbo Frames up to 9000 bytes, enhancing network efficiency and security. Its USB-powered design simplifies deployment, making it an ideal solution for expanding network access without additional power requirements.

  • Broad Device Compatibility: Connects to a wide range of laptops and desktops via USB Type-C or Type-A, ensuring seamless integration with existing hardware infrastructure.
  • Reliable Gigabit Speeds: Provides stable 1000 Mbps Ethernet connectivity, crucial for uninterrupted data transfers and high-bandwidth business applications.
  • Efficient Network Management: Features VLAN tagging and Jumbo Frame support, enabling IT administrators to segment networks and optimize data flow for improved performance.
  • Remote System Control: Incorporates Wake-on-LAN (WoL) to allow remote power-up of devices, facilitating off-hours maintenance and reducing IT support costs.
  • Durable Construction: Built with a robust plastic housing and a high Mean Time Between Failures (MTBF) of 1969065 hours, ensuring long-term operational reliability and reduced replacement cycles.

This adapter is an indispensable accessory for maintaining robust wired network connectivity across diverse computing environments, ensuring operational continuity and efficiency.

Technical Specifications

1Performance & Business Impact
Maximum Data Transfer Rate5000 Mbit/s
Ethernet LAN Data Rates10, 100, 1000 Mbit/s
Mean Time Between Failures (MTBF)1969065 hours
Jumbo Frames Support9000 bytes
VLAN TaggingYes
Wake-on-LAN (WoL)Yes
2Connectivity & I/O
Host InterfaceUSB Type-A / USB Type-C
Ethernet LAN Ports1x RJ-45
USB Version3.2 Gen 1 (3.1 Gen 1)
Cabling Technology10/100/1000BaseT(X)
3Physical & Environmental
Dimensions (W x D x H)21.5 x 353 x 15 mm / 0.85 x 13.9 x 0.59 inches
Weight26 g / 0.06 lbs
Product ColorGrey
Housing MaterialPlastic
Operating Temperature0 - 45 °C (32 - 113 °F)
Operating Humidity10 - 85% (non-condensing)
4Lifecycle, Warranty & Compliance
Warranty2-Year StarTech.com Warranty
In-Box ContentsUSB-C to Ethernet Adapter with USB-A Dongle, Quick-Start Guide
Supported Operating SystemsWindows 10/11, macOS 10.11-14, Linux
USB PoweredYes

Full Specifications

Manufacturer Data
Network12
Maximum data transfer rate5000 Mbit/s
Networking standardsIEEE 802.1Q, IEEE 802.3ab, IEEE 802.3i, IEEE 802.3u, IEEE 802.3x
Ethernet LANYes
Ethernet interface typeFast Ethernet, Gigabit Ethernet
Ethernet LAN data rates10,100,1000 Mbit/s
Cabling technology10/100/1000BaseT(X)
Wake-on-LAN readyYes
Auto MDIX IEEEYes
Full duplexYes
Jumbo frames supportYes
Jumbo frames9000
VLAN taggingYes
Ports & interfaces6
Connectivity technologyWired
Host interfaceUSB Type-A/USB Type-C
InterfaceEthernet
Ethernet LAN (RJ-45) ports1
USB connector form factorStraight
USB version3.2 Gen 1 (3.1 Gen 1)
Power1
USB poweredYes
Weight & dimensions4
Width21.5 mm
Depth353 mm
Height15 mm
Weight26 g
Design6
Component forPC/Laptop
Product colourGrey
InternalNo
ChipsetRealtek RTL8153B
LED indicatorsActivity, Speed
Mean time between failures (MTBF)1969065 h
System requirements1
Windows operating systems supportedWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 IoT Enterprise, Windows 10 Pro, Windows 10 Pro x64, Windows 10 x64, Windows 11, Windows 11 Enterprise, Windows 11 Enterprise x64, Windows 11 Home, Windows 11 Pro, Windows 11 x64, Windows 2000, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64
Operational conditions1
Operating temperature (T-T)0 - 45 °C
Packaging data1
Package width128 mm
Logistics data1
Master (outer) case width500 mm
Other features1
Housing materialPlastic
Downloads1
Product Datasheet65 KB
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What This Solves

Reliable Wired Network Access

Many modern laptops and ultrabooks are designed without an integrated Ethernet port, limiting them to Wi-Fi connectivity. This adapter provides a stable Gigabit Ethernet connection, ensuring uninterrupted access to critical business applications and resources.

Remote workers, field technicians, temporary office setups, conference rooms

Enhanced Network Performance

For tasks requiring high bandwidth or low latency, such as large file transfers, video conferencing, or accessing network-attached storage, Wi-Fi can be insufficient. The adapter delivers 1000 Mbps wired speeds, optimizing data flow and improving productivity for data-intensive operations.

Design firms, media production teams, data analytics departments, IT operations centers

Flexible Device Integration

Organizations often operate with a mix of newer USB-C and older USB-A devices, creating compatibility challenges for accessories. With its dual USB Type-C and Type-A host interfaces, this adapter ensures broad compatibility across diverse hardware fleets, simplifying IT procurement and deployment.

Key Features

USB 3.2 Gen 1 Host Interface

Ensures high-speed data transfer capabilities up to 5 Gbps, supporting the full Gigabit Ethernet throughput for efficient network operations.

Gigabit Ethernet (10/100/1000 Mbps)

Provides stable, high-speed wired network connectivity, essential for business-critical applications and large data transfers without interruption.

Dual USB Type-C and Type-A Connectivity

Offers universal compatibility with a wide range of laptops and desktops, maximizing device flexibility and reducing the need for multiple adapters.

Wake-on-LAN (WoL) Support

Enables remote power-up of devices, allowing IT administrators to perform maintenance and updates outside business hours, minimizing user disruption.

VLAN Tagging & Jumbo Frame Support (9000 bytes)

Facilitates advanced network segmentation and optimizes data packet efficiency, enhancing network security and performance for managed environments.

Compatible With

Modern Laptops & Ultrabooks

Dell XPS, Lenovo ThinkPad, HP EliteBook, Apple MacBook, Microsoft Surface

Desktop PCs & Workstations

HP ProDesk, Dell OptiPlex, Lenovo ThinkCentre, custom-built systems

Network Infrastructure

Ethernet switches, routers, patch panels, network attached storage (NAS)

Operating Systems

Windows 10/11, macOS (El Capitan to Sonoma), various Linux distributions

Frequently Asked Questions

What operating systems are compatible with this adapter?

This adapter is broadly compatible with Windows 10, Windows 11, Windows 7, Windows 8, and Windows 8.1, as well as Mac OS X versions from El Capitan to Sonoma, and various Linux distributions, ensuring wide-ranging support for business environments.

Does this adapter require an external power source?

No, the StarTech.com C21GA-USB-ETHERNET adapter is USB powered, drawing all necessary power directly from the host device's USB port. This simplifies deployment and eliminates the need for an additional power adapter.

Can this adapter be used with both USB-C and older USB-A ports?

Yes, this adapter features a unique design with both a USB Type-C connector and an an integrated USB Type-A dongle, allowing it to connect to either port type for maximum compatibility across different devices.

What is the maximum network speed this adapter supports?

The adapter supports Gigabit Ethernet speeds, providing data rates of 10, 100, and 1000 Mbps. This ensures fast and reliable wired network access for demanding business applications.

Warranty & Returns

Manufacturer Warranty

2 Years

Warranty is provided directly by the manufacturer and covers defects in materials and workmanship under normal use.

Return Policy

Returns subject to manufacturer approval

Hardware returns are governed by the manufacturer's return policy. Some products are non-returnable or subject to restocking fees. Defective items are handled under the manufacturer warranty. Contact Zent Networks before initiating any return.

$28.50