Hi Forum, I run the latest version of Logic Pro 7 and LP 5.5.1 at my home studio on a Dual Proc G5 and and an Athlon 1.4 GHz PC, switching the xs key as needed between the boxes. At work, I'm primarily using a 20" Intel iMac with LP7, but I'd like to also be able to edit on a PC there. I brought in my home studio xs key to run LP 5.5.1 at work on a Dell Dimension 9150 (as there is apparently no way to add LP 5.5.1 to the xs key at work). This PC has only USB ports, no PS2. When launching LP on the PC I get an error msg saying that multiple xs keys have been found and to quit the program. Tried using a usb hub and also a pci usb card, both without success. The Sonikmatter forum suggested using a PS2 keyboard and mouse, but obviously there are no ports on the Dell. Has anyone in this forum had this problem? I'm willing to transport the dongle to and from the work studio, but this looks like a PS2-enabled PC is going to be necessary. Thanks for any thoughts on this.