Up for sale is an authentic 3.5" internal desktop hard disk drive, the Seagate Barracuda 7200.12 1TB (Model ST31000528AS, P/N: 9SL154-568, Firmware: CC34, Date Code: 09363, PCB 100536501 REV A). Featuring a fast 7200 RPM spindle speed and SATA interface, this drive is suited for desktop storage upgrades, external enclosures, or donor PCB/head drive repairs. The unit is in clean cosmetic condition with an intact factory label, straight connector pins, and an undamaged control board showing only standard surface marks from prior mounting. It is being sold strictly AS IS and as photographed—please inspect all high-resolution photos closely to verify firmware, part numbers, and connector configurations prior to purchase; ships fast and safely packed in anti-static protective wrapping and thick bubble mailer packaging