I use the old round puck and the Uniden Cable that POWERS the 325p2, 436hp, SDS100 known as fact I have the new kit never tested the new kit yet as the old one works great for when I need it.The uniden gps kit GPSK-SGPS (for multiple scanners) does not power the radio as far as I know. You need the cig plus plus power the radio either via battery or usb. The puck and utgc cable combined (mentioned by the op) will power the radio and GPS using only one usb (and one cable).. which I prefer.