This unused, new old stock RS-232 interface was designed to allow optional computer control of older Kenwood transceivers including the TS-450s TS-690s TS-850s TS-950s and TS-790A. Includes the 6 pin DIN and 12 V DC cable, in original box with the interface still unopened, in plastic shipping bag. Computer output is 25 pin RS-232 connector. See the manual at http://www.radiomanual.info/schemi/KENW_ACC/Kenwood_IF-232C_user.pdf To see my other listings please follow this link: https://hamshack.ca/author/ve6tc/