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Compact black USB-C adapter with two RJ45 ports and one USB-A port, short integrated cable

STARTECH

STARTECH US1GC301AU2R USB-C to Dual Gigabit Ethernet Adapter with USB-A Port usb converter

SKU CH-39WW-00ZSC MPN US1GC301AU2R

Adds two Gigabit Ethernet ports and a USB 3.0 Type-A port through a single USB-C connection

  • Cable length0.3 ft (0.09 m)
  • Adapter typeUSB to Ethernet
  • First connector1x USB Type-C male
  • Second connector1x USB 3.0 Type-A female 2x RJ-45 female
  • Product colorBlack
  • DetailsBus Type: USB 3.0 Auto MDIX: Yes Bandwidth: 5 Gbit/s (USB 3.
  • Add two Gigabit Ethernet ports via one USB-C connection
  • Expand connectivity with a USB 3.0 Type-A port for peripherals
  • Compact 0.60" x 2.40" x 3.00" design fits any workspace
  • Supports 10/100/1000 Mbps networks with Wake-On-LAN and VLAN tagging
  • Bus-powered USB 3.0 delivers up to 5 Gbps bandwidth

USB-C dual Ethernet adapter with USB-A hub

The StarTech.com US1GC301AU2R adds two Gigabit Ethernet ports and one USB 3.0 Type-A port through a single USB-C connection. It suits laptops such as MacBook, Chromebook Pixel or Dell XPS 12 that lack built-in wired networking. The compact 0.60" x 2.40" x 3.00" enclosure weighs 2.10 oz. A 0.30 ft cable keeps the setup tidy.

Dual RJ-45 ports and a Type-A port

Two RJ-45 female connectors provide 10BASE-T, 100BASE-TX and 1000BASE-T compatibility with full-duplex operation and 4K jumbo frame support. The USB 3.0 Type-A female port adds a hub function for an extra peripheral. Auto MDIX removes the need for crossover cables. Wake-On-LAN and VLAN tagging are supported for managed networks.

USB 3.0 5 Gbps bus limits total throughput

The adapter runs on a USB 3.0 bus rated at 5 Gbps while each Ethernet link runs at 2 Gbps full-duplex. Aggregate wired throughput cannot exceed the bus ceiling. Buyers needing more than two wired links or a faster bus should consider a different solution.

How it compares

Measured against everything we stock in USB Adapter Cables & Dongles, at today’s prices. Recalculated every night.

Price $62.99
Pricier than about 90% of the 1,430 comparable items (median $14.99).

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Specifications

Product
Brand nameStarTech.com
Model nameUS1GC301AU2R
Product colorBlack
Adapter typeUSB to Ethernet
Ports & slots
First connector1x USB Type-C male
Second connector1x USB 3.0 Type-A female
2x RJ-45 female
Size & build
Cable length0.3 ft (0.09 m)
Product dimensions0.6 in × 2.4 in × 3 in
Product weight2.1 oz
Shipping weight0.11 kg
Package size170 × 140 × 30 mm
In the box
In the box1 x USB-C to dual Gigabit Ethernet adapter

Questions about this item

Will the USB 3.0 Type-A port or the dual RJ-45 ports need replacement after heavy daily use?

The adapter has no moving parts; the USB 3.0 Type-A female port and two RJ-45 female ports are solid-state connections rated for standard mating cycles, so no scheduled replacement is required.

Which limit appears first when both Gigabit Ethernet links run at full duplex continuously?

The USB 3.0 bus caps aggregate throughput at 5 Gbps, while each Ethernet port handles 1 Gbps full-duplex (2 Gbps total), so the bus ceiling is reached before the individual 1000BASE-T links saturate.

How much heat or fan noise does the adapter produce when powered all day through the USB-C male connector?

The unit draws power only from the host USB-C port, has no internal fan, and its compact 0.60" x 2.40" x 3.00" aluminium housing dissipates the low wattage silently during continuous operation.

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