Purchased a used KPA-500/KAT500 with a bunch of cables; took me a month to sort-out The following are extras ~ KUSB, KXUSB, and E850465/PCX4097 [has 15pin male, labelled Yaesu] Contact me off list if interested to purchase Cheers, Jan K1ND ~ enjoying the K4 daily ~ -- This email has been checked for viruses by AVG. https://www.avg.com