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Compact black USB 3.0 to RJ45 Gigabit Ethernet adapter

YINGHUA

YINGHUA USB 3.0 Gigabit Ethernet Adapter RJ45 10/100/1000Mbps

SKU CH-KH2D-D5A86

Adds a wired Gigabit Ethernet port to a laptop or PC via USB 3.0, supporting 10/100/1000 Mbps speeds and backward compatibility with USB 2.0

  • Adds wired gigabit LAN to laptops lacking a port
  • USB 3.0 link keeps 1000 Mbps throughput from bottlenecking
  • Backward compatible with USB 2.0 hosts for older machines
  • Auto MDIX detects straight or crossover cables automatically
  • Supports jumbo frames up to 9 KB for efficient large transfers

Compact wired network adapter

This USB 3.0 Gigabit Ethernet adapter adds a wired RJ45 port to laptops and PCs that lack one. It targets users who need a stable 10/100/1000Mbps connection for work or streaming. The compact black dongle draws power from the bus and works with Windows XP through Windows 8, Vista, 7 and macOS 10.6 or later.

Auto-MDIX and Jumbo frame support

The adapter negotiates straight or crossover cables automatically and supports Jumbo packets up to 9 KB for efficient large transfers. Full-duplex and half-duplex operation are both handled at fast Ethernet rates. Plug-and-play installation means no driver hunts on supported systems, and suspend mode with remote wake via magic packets keeps the link alive during sleep.

Gigabit headroom over USB 3.0

Backward compatibility with USB 2.0 ports is present, but throughput will drop to the host controller limit. The single RJ45 port handles one wired link at a time, so buyers needing multiple simultaneous network interfaces or wireless connectivity must look elsewhere. It comfortably serves desktop docking, thin-client setups and travel scenarios where a reliable wired drop is required.

Highlights

  • Adds wired gigabit LAN to laptops lacking a port
  • USB 3.0 link keeps 1000 Mbps throughput from bottlenecking
  • Backward compatible with USB 2.0 hosts for older machines
  • Auto MDIX detects straight or crossover cables automatically
  • Supports jumbo frames up to 9 KB for efficient large transfers

Specifications

No published specifications for this item yet.

Questions about this item

Will the RJ45 port or USB 3.0 connector wear out and need replacement after frequent plugging?

The adapter uses a standard RJ45 jack and USB 3.0 plug rated for typical insertion cycles; no user-serviceable parts are inside, so the whole unit is replaced if a port fails.

What limits throughput first during sustained transfers — the USB 3.0 bus or the Gigabit Ethernet link?

Gigabit Ethernet caps at 1000 Mbps, while USB 3.0 provides up to 5 Gbps bandwidth, so the Ethernet link is the bottleneck under continuous load.

Does the adapter get hot or draw noticeable power when running all day on a laptop?

It is bus-powered with suspend mode support, draws minimal current, and has no fan; the aluminium casing dissipates heat passively during extended use.

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