My pinpad was working fine and all of a sudden it stopped working and I get an communications error every time I open the POS. The pinpad reads ready. However, if I go to configure and test it I get a unable to open error (code
104). I checked all my printers to make sure nothing is on COM2 (I have a serial connection). Is there a way to see if anything else is taking up COM2 or are there any other problems I should test. Any help would be appreciated.