US-122L doesn't work on new machine

[Peter Clark]

I've just moved my US-122L from my old WinXP PC (where it worked fine) to a new Win7 64-bit PC. This new PC has a bunch of USB 2.0 & 3.0 ports on the front & back, all of which work with other USB devices, but not with the US-122L. I also have a PCIe card fitted which provides two USB 3.0 ports on the front panel. I can connect the US-122L to those & get it to work, but not with ANY of the motherboard USB ports. Is the US-122L drawing more current than the ports can handle? Should I just replace the US-122L with a newer device? At this stage, I don't know whether the problem is with the US-122L or the PC.