Upgrade or repair your desktop computer workstation with this genuine HP DH40N 16X SATA Internal DVD-ROM Optical Drive (HP Part Number: 575781-201 / Spares: 581058-001). Designed for compatibility with select HP workstations like the Z400, this reliable 5.25-inch half-height internal optical disc drive reads both DVDs and CDs seamlessly via a standard SATA interface. Whether you are archiving legacy media, playing software installation discs, restoring vintage retro gaming rigs, or replacing a failed optical drive, this tested component delivers dependable performance. Featuring a sleek black bezel faceplate with multi-player branding and a sturdy metal enclosure manufactured in January 2011, it integrates effortlessly into custom PC builds and OEM desktop chassis setups requiring high-speed data transfer rates. Please review all provided photos of the exact unit and label details to verify port layouts, connection types, and cosmetic appearance prior to purchase.