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USB-C to 2.5GbE Ethernet Adapter
A bus-powered USB network adapter for adding up to 2.5GbE wired Ethernet to compatible USB-C systems, with support for USB-A connectivity through the supplied converter.

2.5 Gigabit Ethernet
Supports compatible 2.5G, 1G, 100Mbps and 10Mbps Ethernet networks through one RJ-45 port.
USB-C host connection
A built-in 6in (15.2cm) USB-C cable connects to a USB 3.2 Gen 1 host; the verified product source also supports USB-A use through a converter.
Business network features
PXE boot, Wake-on-LAN, Auto-MDIX, full duplex and 16K jumbo frames are supported.
2-year warranty
Covered by the verified two-year StarTech.com manufacturer warranty.
Key highlights
- Realtek RTL8156BG controller.
- Bus-powered at 5V DC with no separate power adapter required.
- Supports IEEE 802.3bz multi-gigabit Ethernet plus common 10/100/1000 standards.
- OS support includes specified Windows, Windows Server, Linux and macOS versions.
Host and OS notes
A compatible USB host is required. The supplied source notes that VLAN tagging is not supported on macOS and that Jumbo Frames are no longer supported on macOS.
Australian version and official StarTech.com warranty
This is the Australian version supplied by DeviceDeal and is covered by the official StarTech.com 2 years manufacturer warranty in Australia. Retain your DeviceDeal tax invoice as proof of purchase. Warranty coverage and claims are subject to StarTech.com warranty terms, eligibility requirements and product assessment.
What does the StarTech U2GA-USB-C-ETHERNET do?
It adds a wired RJ-45 Ethernet connection with support for up to 2.5GbE to a compatible USB host.
Which Ethernet speeds are supported?
The adapter supports compatible 2.5G, 1G, 100Mbps and 10Mbps Ethernet networks.
What host connection does the adapter use?
It has a built-in USB-C cable for USB 3.2 Gen 1 hosts, and the verified product source also supports USB-A connectivity through a converter.
Does U2GA-USB-C-ETHERNET need a separate power supply?
No. It is bus-powered through USB at 5V DC.
Does it support PXE and Wake-on-LAN?
Yes. The verified specifications list both PXE and Wake-on-LAN support.
Which operating systems are supported?
The supplied specifications list Windows, Windows Server, Linux and macOS versions; macOS has stated limitations for VLAN tagging and Jumbo Frames.
What is included in the package?
The supplied package contents list one USB network adapter.
What warranty applies to U2GA-USB-C-ETHERNET in Australia?
U2GA-USB-C-ETHERNET is covered by the official StarTech.com two-year manufacturer warranty in Australia, subject to StarTech.com warranty terms, eligibility requirements and product assessment.
(U2GA-USB-C-ETHERNET)
Features and highlights
2.5 Gigabit Ethernet
Supports compatible 2.5G, 1G, 100Mbps and 10Mbps Ethernet networks through one RJ-45 port.
USB-C host connection
A built-in 6in (15.2cm) USB-C cable connects to a USB 3.2 Gen 1 host; the verified product source also supports USB-A use through a converter.
Business network features
PXE boot, Wake-on-LAN, Auto-MDIX, full duplex and 16K jumbo frames are supported.
2-year warranty
Covered by the verified two-year StarTech.com manufacturer warranty.
Key highlights
- Realtek RTL8156BG controller.
- Bus-powered at 5V DC with no separate power adapter required.
- Supports IEEE 802.3bz multi-gigabit Ethernet plus common 10/100/1000 standards.
- OS support includes specified Windows, Windows Server, Linux and macOS versions.
Official StarTech.com manufacturer warranty in Australia, subject to warranty terms and product assessment.
Specifications
StarTech U2GA-USB-C-ETHERNET USB-C to 2.5GbE Ethernet Adapter

General
| Warranty | 2 Years |
|---|---|
| Ports | 1 |
| Interface | RJ-45 |
| Bus Type | USB 3.2 Gen 1 (5Gbps) |
| USB Pass-Through | No |
| Chipset | Realtek RTL8156BG |
Connectors
| Host Connector | 1 × USB 3.2 Type-C Gen 1 (5Gbps) |
|---|---|
| Network Connector | 1 × RJ-45 |
Networking and Performance
| Compatible Networks | 2.5G / 1G / 100Mbps / 10Mbps |
|---|---|
| Standards | IEEE 802.3i, 802.3ab, 802.1Q, 802.3x, 802.3u, 802.3bz |
| Wake-on-LAN | Yes |
| PXE | Yes |
| Auto MDIX | Yes |
| Full Duplex | Yes |
| Maximum Jumbo Frame | 16K |
| Promiscuous Mode | Yes |
| LED Indicators | Activity / Link Speed |
| MTBF | 1,612,526 hours |
Power
| Power Source | USB-powered |
|---|---|
| Input Voltage | 5V DC |
Software and Compatibility
| Windows | Windows 11 ARM, 11, 10, 8, 8.1, 7 |
|---|---|
| Windows Server | 2022, 2016, 2012 R2, 2008 R2 |
| Linux | Kernel 2.4.20+ LTS versions |
| macOS | 10.1110.15, 11, 12, 13, 14 |
| macOS Notes | VLAN tagging is not supported; Jumbo Frames are no longer supported on macOS |
Physical and Environmental
| Colour | Space Gray |
|---|---|
| Enclosure | Plastic |
| Attached Cable | Yes |
| Cable Length | 6 in [152 mm] |
| Product Length | 10 in |
| Product Width | 0.8 in |
| Product Height | 0.6 in |
| Product Weight | 0.9 oz [26 g] |
| Operating Temperature | 0°C to 45°C |
| Storage Temperature | -10°C to 70°C |
| Humidity | 10% to 85% non-condensing |
What's in the Box
| Included | 1 × USB network adapter |
|---|
| SKU | U2GA-USB-C-ETHERNET |
| Barcode # | 65030905176 |
| Brand | STARTECH |
| Shipping Weight | 0.0200kg |
| Shipping Width | 0.002m |
| Shipping Height | 0.011m |
| Shipping Length | 0.011m |
StarTech U2GA-USB-C-ETHERNET is the Australian version supplied by DeviceDeal and is covered by the official StarTech.com 2 years manufacturer warranty in Australia.
Please retain your DeviceDeal tax invoice as proof of purchase.
Warranty coverage and claims are subject to StarTech.com warranty terms, eligibility requirements and product assessment.
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