hello I the first elm 327 I took it with a usb cable,and it worked fine, then to use torque on the cell, I sold the usb and I got the blt wireless, use it equally on the pc, and then with all of the programs through recognition blt inside of the pc, and then assigning com ports normally in 3 days that I used it no problem, in the box and the usb port was 1.5 v, this wireless v. 1.4, if I have problems or else you held? updated.