HP Pavilion ze4545SR Series Hard Drives. Replace or Upgrade your current hard drives with bigger and faster hard drives. Our EZ-Gig data transfer kit can transfer all your programs, data and operating system from current hard drives to new hard drives, making hard drive upgrading easy and fun. All hard drives listed below are compatible with this series laptop computers. You also need the special connector adapters list below to connect the hard drives to your computers. You can remove the connector adapterss from current hard drives and reuse them on the new hard drives, or just order new connector adapterss with the hard drives from us.