This is a used Gateway 450ROG 512MB RAM PC bundle, which is currently being sold for parts.  This bundle includes an official Gateway AC adapter (Model no. ADP-90HB-B), the original hard drive kit cover, a Windows XP Professional Service Pack 1 -- SP1 for short -- product key, and the Gateway 450ROG PC itself.  The original installation disc for Windows XP Professional SP1 is not included, though, as it was misplaced a long time ago.  Sorry for the inconvenience.

This PC has been tested, both with and without a hard drive kit, and works without issue (shown in photos).  However, since this bundle doesn't include a hard drive kit, which is required to install the operating system, it has been listed as "For Parts".  The product key for Windows XP Professional SP1 has been redacted in this listing's photos for security reasons.  Also, this computer appears to only support wired and wireless connections that use a WEP or WPA security key.  Any other connections appear to be incompatible.  The front left panel -- where the PC's top half folds -- is missing (shown in photo) and there is a slight burn-in mark below the right Alt and Ctrl keys (shown in photo).  Lastly, the computer appears to have some wear and a few scratches on the back panel with the "G" Gateway logo, due to prior usage and nearly a decade of being in storage.  Sorry for the inconvenience.