Just to let everyone know. If you update your transmitter firmware to 1.04, you will be able to use multiple transmitters w/ one receiver. This was not possible with the two previous firmware versions. This is very convenient for switching guitars on the fly, however you must still make sure only one transmitter is on to do this, so the firmware still needs an identifier so we can switch quicker. By identifiee, I mean the receiver should be able to negotiate the new source immediately when a signal passes through. Hopefully this will help. Also if you are concerned about the USB port failure issue, I have found this which will eliminate mechanical failure. https://www.amazon.com/gp/aw/d/B01M2C5KHC/ref=mp_s_a_1_5/161-4993234-2150528?ie=UTF8&qid=1483821353&sr=8-5&pi=AC_SX236_SY340_FMwebp_QL65&keywords=magnetic+micro+usb&dpPl=1&dpID=31OS8%2BJU5tL&ref=plSrch