HP 503489-001 - SuperMulti HP BD-R/RE (Blu-ray Disc) Writer and DVD-R/RW optical drive - Reads/Writes to Blu-ray HD media, DVD+-R/RW media, and CDR Retail
HP 503487-001 - SuperMulti HP BD-ROM (Blu-ray Disc) optical drive - Reads Blu-ray HD media, writes to DVD-R/RW and CDR/RW media, 12.7mm thick Retail
