581286-B21 581311-001 507129-014 100% Compatible 600GB SAS 2.5" OEM Hard Drive w/ HP Tray Pulled from functioning environment. Fully covered by A to Z warranty Same day shipping if purchased before 4PM CST, Monday through Friday One year end user warranty Please contact Core 4 Solutions for questions about expedited shipping, item condition, warranty etc. Core 4 Solutions has served over 18,900+ satisfied IT buyers.