HP 550 manual Optical drive

4.Remove the memory module (2) by pulling the module away from the slot at an angle.

NOTE: Memory modules are designed with a notch (3) to prevent incorrect insertion into the memory module slot.

Reverse this procedure to install a memory module.

Optical drive

NOTE: All optical drive spare part kits include an optical drive bezel.

Description	Spare part number
Supports the following PATA optical drives:
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe	500768-001
DVD/CD-RW Combo Drive	500767-001
DVD-ROM Drive	500766-001
Optical drive connector board (PATA)	456805-001
Supports the following SATA optical drives:
DVD±RW and CD-RW SuperMulti Double-Layer Combo Drive with LightScribe	507116-001
DVD/CD-RW Combo Drive	507117-001
DVD-ROM Drive	507115-001
Optical drive connector board (SATA)	495386-001

Before removing the optical drive, follow these steps:

1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.

2.Disconnect all external devices connected to the computer.

46 Chapter 4 Removal and replacement procedures