3 accessory plugs for many Kenwood HF transceivers including the TS-2000, TS570, TS870, TS590 and others. These plug into the rear panel for digital modes audio and PTT, amplifier hookup, and other things. ONE 7 PIN PLUG, ONE 8 PIN PLUG AND ONE 13 PIN PLUG. $15 SHIPPED. - I can take paypal/check/MO. - 73 John AF5CC