[I bought a used corporate computer, just the box, And Then That It Had found no PS / 2 ports. I-have already a PS / 2 keyboard and mouse, so I needed this adapter. It works perfectly. As reviewers-have --other jour restera une the "\" key does not work, we aim uncommon Those occasions When I need it, I used the ASCII code "92" instead (using the ALT key and numeric keypad). I am happy to recommend this product.]