this do just what I want it to . I have a keyboard with only a usb male connector . this device convert that usb connector to the older style of male connector : PS\/2 . ideazon Merc Stealth illuminate gaming keyboard owner : attention ! this device will not work for you . it work perfectly well with another usb keyboard that I have , but not with my usb Merc Stealth . and this be not a unique defect of my Merc Stealth unit . I read some message board post on other website , and there be a entry in the Merc Stealth manual that corroborate what I have say . the Merc Stealth will simply not work with this PS\/2 adapter . also , I read a couple of other review here at amazon , and apparently this device do not always work . therefore only three star .