StarTech.com US1GC30B — USB-C to Gigabit Ethernet Adapter, Black
Gigabit EthernetUSB-C / TB3 / TB4Realtek RTL8153Black
The StarTech.com US1GC30B is an USB-C to Gigabit Ethernet adapter that adds a wired Gigabit Ethernet port to a laptop, desktop PC, tablet or thin client through its USB-C port. StarTech.com lists it as Thunderbolt 3 and 4 compatible, and it also supports Android and iOS devices with USB-C. It is built on the Realtek RTL8153 controller and connects at 10/100/1000 Mbps. It draws its power from the USB port, so there is no separate power supply to carry. A cable connection is the dependable answer when Wi-Fi is weak, crowded or not allowed, when a slim laptop has no network socket, or when backups, large downloads and video calls need a steady, low-latency link.
Compatibility — check before buying:
Check the port: the adapter has a USB-C plug and does not fit USB-A ports; any USB-C data port works, including Thunderbolt 3/4 and USB4 ports. It links at up to 1 Gbps with any standard switch or router port, and Cat5e cable or better is enough. Operating systems listed by StarTech.com: Windows 7 and later, Windows Server, macOS 10.14 and later, Linux 4.11 and later (LTS), ChromeOS, Android, iOS. Not sure it suits your laptop, dock or switch? Tell us the model and we check it.
Best For
✓ Laptops without an Ethernet port
✓ Stable video calls and remote desktop
✓ Office desks and hot desks
✓ Backups and large downloads
✓ Replacing a faulty built-in port
✓ IT toolkits and travel bags
Key Features
Gigabit Ethernet
Up to 1000 Mbps full duplex for steady calls, cloud work and file transfers; falls back to 100/10 Mbps automatically.
USB-C plug
Fits the USB-C port of current laptops, tablets and PCs, including Thunderbolt 3/4 and USB4 ports.
Network features
Supports Wake-on-LAN, 9K jumbo frames (not on macOS), 802.1Q VLAN.
Phones and tablets too
Listed for Android and iOS devices with USB-C as well as laptops.
Technical Specifications
| Identification |
| Brand |
StarTech.com |
| Product |
USB-C to Gigabit Ethernet Adapter, Black, Thunderbolt 3 / 4 Compatible |
| Part Number |
US1GC30B |
| EAN / GTIN |
0065030862639 |
| Network |
| Ports |
1× RJ45 Gigabit Ethernet |
| Speeds |
10/100/1000 Mbps |
| Chipset |
Realtek RTL8153 |
| Features |
Wake-on-LAN, 9K jumbo frames (not on macOS), 802.1Q VLAN |
| Host Connection |
| Connector |
USB-C (5 Gbps) |
| USB |
USB 3.2 Gen 1 (5 Gbps) Type-C |
| Power |
USB bus powered |
| Compatibility |
| Operating Systems |
Windows 7 and later, Windows Server, macOS 10.14 and later, Linux 4.11 and later (LTS), ChromeOS, Android, iOS |
| Physical |
| Colour |
Black |
| Cable |
attached |
| Dimensions |
23.5 cm × 27 mm × 15 mm (incl. cable) |
| Weight |
25 g |
| In the Box |
| Included |
USB-C Gigabit Ethernet adapter |
| Not Included |
Network cable, switch or router |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
StarTech.com publishes a 2-year warranty for this part number in its official datasheet. Singular’s direct warranty is 1 year; beyond that we assist you with the manufacturer’s warranty process for its full duration. |
Frequently Asked Questions
Do I need to install a driver?
Supported systems listed by StarTech.com: Windows 7 and later, Windows Server, macOS 10.14 and later, Linux 4.11 and later (LTS), ChromeOS, Android, iOS. Where the system does not load a driver on its own, install the driver from the StarTech.com support page for this model.
Is it faster than Wi-Fi?
A wired Gigabit link gives up to 1 Gbps with steadier latency than most Wi-Fi connections — that is what video calls, remote desktop and large transfers benefit from. Your internet speed still depends on your connection.
Can I use it on a USB-A port?
No, it has a USB-C plug only. For USB-A computers choose StarTech.com USB31000S (USB-A).
Does it work through a dock or USB hub?
Usually yes — it is a standard USB network device. For full speed the hub or dock port must be USB 3.x, and bus-powered hubs should have enough power for all connected devices.
Singular Expert Insight
We suggest the US1GC30B as the standard USB-C Gigabit adapter for business laptops, tablets and Chromebooks. Need a spare USB-A port too? The
US1GC301AU adds one. Browse more
network cards or
network switches. Local support in Cyprus comes with every order.
Buyer’s Guide
Buy it if
You need a simple, reliable USB-C Gigabit adapter.
Skip it if
You also need charging or a USB-A port on the adapter.
Also consider
StarTech.com US1GC301AU — with an extra USB-A port.