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Small black USB-C to RJ45 network adapter with short cable

STARTECH

STARTECH US1GC30B USB-C to Gigabit Ethernet Adapter

SKU CH-RNCV-X8TJS MPN US1GC30B

Adds a Gigabit Ethernet port through a USB-C connection with native driver support and Thunderbolt 3 compatibility

  • StandardsIEEE 802.3, 802.3u and 802.3ab
  • Speed10/100/1000Mbps
  • ConnectorsConnector Type (s): 1 - USB Type-C (24 pin) USB 3.0 Male Ext
  • TemperatureOperating Temperature: 0 ~ 70 degree Celsius (32 ~ 158 degre
  • Humidity5% ~ 90% RH
  • FeaturesAdd a Gigabit Ethernet network connection to your computer t
  • Gigabit Ethernet over USB-C at 10/100/1000 Mbps with auto-detection
  • Instant native driver support means no downloads or setup required
  • Thunderbolt 3 compatible for use with the newest laptops and desktops
  • Compact 0.60" x 8.30" x 1.00" design weighs just 0.19 lb for travel
  • Powered directly from the USB port so no external adapter is needed

USB-C Gigabit Ethernet Adapter

The StarTech US1GC30B adds a wired network port to laptops and desktops that only have USB-C connectivity. It connects through a USB 3.1 Gen 1 interface and delivers 10/100/1000Mbps speeds with auto-detection. Native driver support provides instant connection without downloads. The compact adapter draws power directly from the host port.

Upgrade from Missing or Slow Ports

This adapter replaces a missing onboard Ethernet jack or supplements a slower 100Mbps connection. The jump is worth it when you need reliable gigabit throughput for large file transfers or stable video calls. It supports checksum and large send offload to reduce CPU load during sustained traffic. Systems without USB-C cannot use this adapter.

Fits USB-C Workstations

The 24-pin USB-C plug works with Thunderbolt 3 ports and standard USB 3.0 Type-C sockets. No external power supply is required, freeing up outlets and keeping cable count low. Operating range spans 0 to 70 degree Celsius for office or field use. The package contains only the adapter itself.

Highlights

  • Gigabit Ethernet over USB-C at 10/100/1000 Mbps with auto-detection
  • Instant native driver support means no downloads or setup required
  • Thunderbolt 3 compatible for use with the newest laptops and desktops
  • Compact 0.60" x 8.30" x 1.00" design weighs just 0.19 lb for travel
  • Powered directly from the USB port so no external adapter is needed

Specifications

BrandStarTech.com
ModelUS1GC30B
StandardsIEEE 802.3, 802.3u and 802.3ab
Speed10/100/1000Mbps
ConnectorsConnector Type (s): 1 - USB Type-C (24 pin) USB 3.0 Male
External Ports: 1 - RJ-45 Female
TemperatureOperating Temperature: 0 ~ 70 degree Celsius (32 ~ 158 degree Fahrenheit)
Storage Temperature: -10 ~ 80 degree Celsius (14 ~ 176 degree Fahrenheit)
Humidity5% ~ 90% RH
FeaturesAdd a Gigabit Ethernet network connection to your computer through the latest USB 3.1 Gen 1 (5 Gbps) technology and USB Type-C port
Works with the newest MacBook, Chromebook Pixel and other laptop and desktop computers with a USB-C port
Thunderbolt 3 port compatible
Native driver support in Chrome OS, Mac OS 10.10, Windows 8.1 for easy set-up
Powered directly from the USB port
Compact, lightweight design for maximum portability
Supports 10/100/1000 Mbps auto-detection
IEEE 802.3, 802.3u and 802.3ab compatible
IEEE 802.1Q VLAN Tagging support
Built-in Checksum and Large Send Offload
U
Dimensions0.60" x 8.30" x 1.00"
Weight0.19 lb.
Package Contents1 - USB-C to GbE network adapter
Shipping weight0.09 kg
Package size170 × 142 × 28 mm

Questions about this item

What USB-C port dimensions does the 0.60" x 8.30" x 1.00" adapter need for a secure fit?

The adapter plugs into any standard USB Type-C (24 pin) USB 3.0 male port and requires no extra clearance beyond its 0.60" x 8.30" x 1.00" body.

Which step do users miss when installing the adapter on a Thunderbolt 3 port?

Simply insert the USB-C connector; native driver support in IEEE 802.3, 802.3u and 802.3ab standards gives instant 10/100/1000Mbps Ethernet with no downloads required.

When should the RJ-45 female port be checked for wear?

Inspect the RJ-45 port if link lights fail or speeds drop below 10/100/1000Mbps; the adapter has no moving parts and operates from 0 to 70 °C.

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