HP ProBook 6555b User Manual

3. Replace the 4 hard drive screws (1), and then replace the protective screw caps (2).
4. Replace the battery.
5. Turn the computer right-side up, and then reconnect external power and external devices.
6. Turn on the computer.
Replacing an optical drive
CAUTION: To prevent information loss or an unresponsive system:
Shut down the computer before removing the optical drive from the upgrade bay. Do not remove the
optical drive while the computer is on, in the Sleep state, or in Hibernation.
If you are not sure whether the computer is off or in Hibernation, turn the computer on by pressing the
power button. Then shut down the computer through the operating system.
To remove an optical drive from the upgrade bay:
1. Save your work.
2. Shut down the computer and close the display.
3. Disconnect all external hardware devices connected to the computer.
4. Unplug the power cord from the AC outlet.
5. Turn the computer upside down on a flat surface, with the upgrade bay toward you.
6. Remove the battery from the computer.
7. Loosen the upgrade bay screw (1).
92 Chapter 6 Drives

HP ProBook 6555b Specifications

General

Graphics	ATI Mobility Radeon HD 4250
Chipset	AMD M880G
Processor	AMD Turion II, AMD Athlon II
Display	15.6-inch diagonal LED-backlit HD anti-glare (1366 x 768 resolution)
Memory	Up to 8 GB DDR3 SDRAM
Storage	320 GB, 250 GB, or 160 GB 7200 rpm SATA II HDD
Operating System	Genuine Windows 7 Professional, FreeDOS
Battery	6-cell lithium-ion
Optical Drive	DVD+/-RW SuperMulti DL
Networking	Gigabit Ethernet, Wi-Fi 802.11a/b/g/n, Bluetooth
Audio	High Definition Audio, stereo speakers, microphone
Ports	3 USB 2.0, VGA, HDMI, RJ-45, headphone/microphone combo jack
Card Reader	5-in-1
Webcam	2 MP Webcam (optional)