Network performance issue is resolved by connecting any USB device to PC
Posted on 2012-08-21
I was trying to figure out why my client PC, an HP Compaq 6200 Pro with a corporate image of XPP, had such poor performance when accessing a server that's connected to the same switch as the client in our corporate network. After a lot of testing, I observed the following bizarre phenomenon. The network performance issue would disappear when I connected any USB device to the client machine regardless of whether I installed any drivers for the device. I could plug in a USB NIC or a flash drive and get the same increase in performance (without connecting a network cable to the USB NIC). I further discovered that this is true of all of the HP Compaq 6200 Pro's in our environment. The older client PC's do not have this network issue. And the problem client PC's would instantly go back to having a network performance issue once the USB NIC or flash drive was removed. Obviously, I'm looking for a solution to my network issue on these client PC's that doesn't involve connecting a random USB device to each to increase their performance. Secondly, anybody ever heard of such a thing before or understand why this is happening? I'm pretty sure some of you will suggest I am on drugs just as I would if I were not seeing it with my own eyes.