A Gigabit Ethernet adapter that delivers

This is a USB adapter 3 Gigabit Ethernet that keeps its promises. I conducted several tests to compare it to (real) ethernet cards in PCI-E bus and throughput of this USB adapter 3 is comparable in all respects.
With iperf software, I could measure real speed of 940 Mb / s.
Tested under MacOSX 10.8 and a Linux FLSA.
Really a good product, thanks to the Asix AX88179 chip which it is equipped.
A tip for beginners; it is worth taking an adapter having such a chip, rather than a low-end adapter that will work much your CPU.