We have a laboratory PC that measures tolerances via a microscope. The microscope device is connected to the PC on a USB port set to COM1. We want to attach a second device to the PC via USB, which we will assume will be assigned to COM2. Will both devices talk to each other automatically? If not, is there a way to manual set it up so that COM1 will communicate with COM2 or vice versa? How about if we simply get a USB splitter that attaches to the main USB port on the PC so that USB port is shared out to two connections. Will the connected devices be assigned to COM1? Or will one attached device get COM1 and the second device on the splitter get COM2 ? The goal is to get the second attached device on a USB port to talk to the first attached device on the primary USB port. Thanks in advance.