Apple USB Ethernet adapter vs its cheap knockoff

apple-usb-to-ethernet-adapter-vs-knockoff

@projectgus has written a detail analysis comparing Apple’s $29 USB Ethernet adapter with a cheap shanzhai clone obtained from eBay for about $3.99.

apple-usb-to-ethernet-knockoff

Apple adapter has a higher throughput of 94.3Mbps, compared favourably with builtin ethernet at 94.8Mbps. The cheap adapter measured 87.4Mbps. In addition to higher throughput, Apple adapter has a metal shielding from interference and has a genuine ASIX AX88772ALF USB to Ethernet bridge chip. 

Clearly you pay for what you get, but it does not mean the cheap clone is not usable.