if you think the cable should work but still isn’t working, it may not be compatible with the ieee 802.3 type 10base-t, 100base-t, or 1000base-t standards, as appropriate for the switch port type that the cable is connected to. the twisted-pair cables attached to a procurve switch 8100fl must be compatible with these standards.to verify your cable is compatible with these standards, use a qualified cable testing device.