On Fri, Jan 13, 2012 at 7:30 PM, John Ferrell wro= te: > I am one of those people who is dedicated to using a Logitec FX > Trackball for the pointer on My PC. > They have been out of production for several years. Even when you find > one it it will always use a PS2 connector. > I have a rather complex cluster of machines that implements two KVM > switches. One of the switches is USB because one of the computers is USB > only. > A ps2->usb adapter will not work with the USB KVM. The vendor plainly > states that. He is correct. Since the PS2->USB adapter is simply a > passive device that connects the appropriate data pins to the different > connectors, I think it has to be a timing issue. > > My current thinking is to install an USB connector on the trackball and > try a short USB cable. > > Your thoughts and suggestions are welcome. I don't like the try it and > see technique other than a last resort! I have an active USB-PS2 device that works as any normal USB keyboard/mouse would. http://www.amazon.com/Belkin-USB-PS-2-Adapter/dp/B000ELSXFY/ref=3Dsr_1_3?ie= =3DUTF8&qid=3D1326504488&sr=3D8-3 --=20 Martin K. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .