StarTech.com

StarTech USB-C Gigabit Ethernet Adapter, Thunderbolt 3/4, RJ45 | Thunderbolt 3/4 Compatible, 10/100/1000 Mbps, USB Bus Powered, Windows, Mac, Linux, ChromeOS

Name: StarTech USB-C Gigabit Ethernet Adapter, Thunderbolt 3/4, RJ45 | Thunderbolt 3/4 Compatible, 10/100/1000 Mbps, USB Bus Powered, Windows, Mac, Linux
Brand: StarTech.com
SKU: B0109IY8PA
Price: 19.93 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-20

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$19.93

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*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.

Bottom line: The StarTech USB-C Gigabit Ethernet Adapter, Thunderbolt 3/4, RJ45 | Thunderbolt 3/4 Compatible, 10/100/1000 Mbps, USB Bus Powered, Windows, Mac, Linux, ChromeOS is a specs-and-price decision rather than a crowd-consensus one in the networking cards category, priced around $19.93. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

Pros & Cons

Pros

✓ Backed by StarTech.com's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Instantly add a Gigabit Ethernet network connection to your computer with a USB-C to Gigabit Ethernet adapter, using either the USB Type-C™ or Thunderbolt™ 3 port on your computer. Powerful Gigabit Network Connections The USB-C to LAN adapter supports full Gigabit bandwidth by harnessing the performance of USB 3.1 Gen 1 (5Gbps). You can access very large files over the network at 10/100/1000Mbps network speeds with checksum offload (IPv4, IPv6, TCP, UDP) and large-send offload support. Uses USB Type-C and Thunderbolt 3 Instantly delivers Gigabit speeds using the USB-C or Thunderbolt 3 port…

SpecPicks Verdict

SpecPicks scored StarTech USB-C Gigabit Ethernet Adapter, Thunderbolt 3/4, RJ45 |… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the networking cards category. StarTech.com's networking cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for networking cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Key Features

USB-C NETWORK ADAPTER: USB-C to RJ45 adapter adds an Ethernet port to your computer supporting up to Gigabit speeds on 10/100/1000 Mbps Networks; Ideal for reliable wired gigabit network connections, or as an alternative to WiFi
FULL FEATURED: USB-C to Ethernet dongle; Uses Realtek RTL8153 Chipset for native compatibility with laptops, desktops, and 2-in-1 computers; Compatible with USB C, Thunderbolt 3 and Thunderbolt 4
VERSATILE DESIGN: With its compact and lightweight design for maximum portability, this USB Type-C NIC/Gigabit network adapter enables you to securely connect your laptop to a Gigabit Ethernet network wherever you go; USB bus-powered
TECHNICAL SPECS: USB 3.2 Gen 1 Type-C (5 Gbps); Compatible with USB 3.0/2.0; 1x RJ45 Port; Attached Cable; 10/100/1000 Mbps; Realtek RTL8153 Chipset ; 9K Jumbo Frames; VLAN Tagging; Wake-on-LAN; Color: Black; No driver install required
OS COMPATIBILITY: USB NIC adapter for laptop offers plug and play connectivity; Works with Windows versions 7 and up, Windows Server, macOS 10.14 and up, Linux with kernel 4.11 and up (LTS only), ChromeOS, Android and iOS (iPhone 15 [Plus/Pro/Max] and up)

Full Specifications

Brand	StarTech.com
Color	Black
Unit Count	1.0 Count
Connectivity	USB-C, WiFi
Model Number	US1GC30B
Compatibility	Android, iOS, Mac, Linux
Built-In Media	Gigabit Ethernet Card
Item Type Name	Gigabit Ethernet Card
Connection Type	Wired
Mfr Part Number	US1GC30B
Compatible Devices	Desktop
Data Link Protocol	Ethernet, Gigabit Ethernet, USB
Data Transfer Rate	5000 Megabits Per Second
Hardware Interface	Ethernet
Warranty Description	2 Years
Item Dimensions L x W x H	8.3"L x 1"W x 0.6"H
External Testing Certification	CE, FCC
Global Trade Identification Number	00065030862639

Ready to buy?

StarTech USB-C Gigabit Ethernet Adapter, Thunderbolt 3/4, RJ45 | Thunderbolt 3/4 Compatible, 10/100/1000 Mbps, USB Bus Powered, Windows, Mac, Linux, ChromeOS is sold on the used and vintage market, where eBay carries the live inventory — Amazon does not stock this part. Prices and condition vary by seller and move in real time, so we link the live listing rather than quote a cached price. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Last updated 2026-04-20. Price and availability subject to change.