Most SATA Hard Drives are compatible with all of the current HP xw-series and Z-series Workstations (check the individual workstation QuickSpecs for current hard drive compatibility information). When ordering drives as After Market Options for use in an optical bay, order an appropriate bracket. Not all hard drive models are available in all regions. Your Option Limited Warranty is a one (1) year (HP Option Limited Warranty Period) parts replacement warranty on any HP-branded or Compaq-branded options (HP Options). If your HP Option is installed in an HP Hardware Product, HP may provide warranty service either for the HP Option Limited Warranty Period or the remaining Limited Warranty Period of the HP Hardware Product in which the HP Option is being installed, whichever period is the longer but not to exceed three (3) years from the date you purchased the HP Option.