Sanwa Supply RS-232C Conversion Adapter (D-sub9pin Female to D-sub25pin Male) AD09-9F25MK This is a conversion adapter that changes a D-sub25pin female to a D-sub9pin female (or a D-sub9pin male to a D-sub25pin male) on an RS-232C port. Two replacement millimeter screws are included. (Common to AD09-9F25MK and AD09-9M25MK) Connector Type: D-sub9pin Female inch screws (4-40) - D-sub25pin Male millimeter screws (M2.6) / inch screws (4-40) Compatible Models: Windows-equipped (DOS/V) PCs, NEC PC98-NX series, Toshiba J-3100/3300 series, AX PCs, etc. Manufacturer: Sanwa Supply Condition: New The minimum purchase quantity on Amazon was 3. If you would like to order one, please consider it.