StarTech.com US1GC30B · Network adapter

MPN / P/N

US1GC30B

Manufacturer designation

USB-C to Gigabit Ethernet Adapter, Black, Thunderbolt 3 / 4 Compatible, Windows & Mac, RJ45 LAN Network Converter

Special Notes

Jumbo Frames are no longer supported in macOS

System and Cable Requirements

Available USB Type-C port

Power Source

USB-Powered

Input Voltage

5V DC

Output Voltage

5 DC

Colour

Black

Network Adapter Form

Attached Cable; Factor

Material

Plastic

Product length

9.3 in [23.5 cm]

Width

1.1 in [27.0 mm]

Height

0.6 in [15.0 mm]

Weight

0.9 oz [25.0 g]

Operating Temperature

0C to 45C (32F to 113F)

Storage Temperature

-10C to 70C (14F to 158F)

Humidity

10%-85% RH

Maximum data transfer rate

5 Gbps (USB 3.0); 2 Gbps (Ethernet - Full-Duplex)

Type and Rate

USB 5Gbps

Compatible networks

10/100/1000 Mbps

Auto MDIX

Yes

Full Duplex Support

Yes

Wake-On-LAN (WOL)

Yes

Number of Ports

1

Interface

RJ45 (Gigabit Ethernet)

Bus Type

USB 5Gbps

Industry Standards

IEEE 802.3, 802.3u and 802.3ab

Chipset ID

Realtek - RTL8153

Connector 1 (Quantity)

1

Connector 1

USB-C (5Gbps, 4.5W)

Connector 2 (Quantity)

1

Connector 2

RJ-45

Selection limits

Match the exact connector standards, host features, supported OS/driver requirements and power-supply version. Manufacturer maximum throughput, resolution/refresh and Power Delivery ratings are conditional limits, not a universal result. Video conversion is directional unless the exact manufacturer specification explicitly states otherwise. USB-C video adapters require the stated video-capable host mode; display and source capabilities must match.

Specification source: StarTech.com ↗
Checked against documentation: 16.10.2026