This is a Sanwa Supply RS-232C (D-sub25Pin) reverse adapter, model D09-R25MF2. It is still in its blister pack and appears to be unopened, but due to long-term home storage, the card and packaging have scratches, marks, and discoloration. Please refer to the back of the package for information on compatible devices and wiring instructions. Please purchase this item if you understand that it is an old part and do not mind the minor condition issues. It will be shipped in simple packaging. Please note that we cannot accept returns or refunds, including for initial defects.