In stock

USB 3.0 Network Adapter

USB30-LAN

Adds a wired network port to a computer that has none, over USB. Useful for ultrabooks without an RJ45 socket.

Type: Converter
Connectors: USB-A

In-depth technical details

USB-A carries just 4 pins: VBUS (+5V power), a D+/D- differential data pair, and GND -- the simplest USB pinout, with no reversibility and no Power Delivery negotiation lines.

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Connector anatomy

USB Type-A

01 VBUS +5V power. Slightly longer than the other pins so it mates first and breaks last.
02 D+ / D− The differential data pair -- the same signal inverted on each wire, so noise cancels at the receiver.
03 GND The common ground -- the voltage reference every other signal is measured against.
04 Metal shell The plastic tongue sits in one half of the shell only, which is why the plug goes in one way up.
05 Strain-relief boot Stops the wires flexing where they leave the plug — the exact point most cables fail.
06 Outer jacket The outer sheath protecting the conductors inside from abrasion and moisture.

Technical illustration, not a photo of the actual product

From the published standard

How it works

The adapter puts a full Ethernet chip inside a small body outside the computer, so the system sees it as an ordinary network card through the USB port. USB 3.0's bandwidth is enough (and more) for real gigabit throughput; USB 2.0 caps real-world speed below 1000 Mbps even on a device labelled gigabit.

Function: Adds a wired Ethernet port over USB
USB 2.0 vs 3.0: USB 2.0 bottlenecks real gigabit throughput; USB 3.0 does not

This information comes from published sources about this type of product, not from the supplier.

en.wikipedia.org

Technical specifications

Type	Converter
Connectors	USB-A

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