I am using two Picoscopes 2204 at the same time in LabVIEW 2011 and it works, but I want to identify which one is which even if I disconnect them and connect them back, in any PC of the lab where I work. The solution, I thought, was simple: using the Get unit info function. The issue is that I only get the driver version, without any other information. I don't know if I do something wrong, so I put my VI and library in an attachment. The VI that I use is GetInfoPicoscopes.vi. Does anyone have an idea of the reason why I don't get any info, about the serial number particularly?