I'm using a Windows XP Professaional PC. We have a cross-over cable
(Cat 5e) connected from this PC to our reader ( we request information
from this device). When we intially connected the devices, it is
connected at 100 Mbps. But during testing a few hours later it drops to
10Mbs. We are not sure why this is happening the PC NIC is set to
AutoSense and we don't have access to the reader's NIC card. Any advice
would be helpful.