I have installed the USB 2.0 Gigabit Ethernet Adaptor on three computer/laptops running Win XP and Ubuntu 11.10 & 10.10, and the maximum speed I was able to clock was between 10 to 11 MB/s while copying 4 GB file from a SAN share on a gigabit network. On the otherhand, when I test with another PCI ethernet card, I’ve clocked between 60 to 80 MB/s. I am aware that since this is a USB 2 the max I will expect is 480Mps and not 1000Mbps but I am getting way low readings; almost close to the 100 Mbps card that I already have.
It should be noted that my current network uses CAT6 cables & NetGear Gigabit Switch; and my OSs (Ubuntu and XP) reported a status of 1000Bps for the ethernet’s speed.
I appreciate any feedback; many thanks in advance