Actually, I bought the GWS one and did not like the way it was set up in Vista. I had bought a HiTec one at my LHS for my old round Futaba. The round Futaba pigtail was connected via al 2 pole 1/8" plug. I cut the square plug off the GWS system and soldered a plug on - plugs right into the HiTec adapter and works great. BTW, I cannot find a HiTec square adapter (probably because they still use the old round format).