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Secondary hard drive
NOTE: The 6.35-cm (2.50-inch) secondary hard drive must be installed in the optical drive bay.
Installation of this drive in the hard drive bay is not supported. (This option is not available when the
optical drive is installed.)
Description Spare part number
320-GB, 7200-rpm hard drive 513949-001
250-GB, 5400-rpm hard drive 513948-001
160-GB, 7200-rpm hard drive 492564-001
160-GB, 5400-rpm hard drive 513950-001
120-GB, 5400-rpm hard drive 492561-001
Secondary hard drive cage assembly, includes additional USB port (required for
installation of secondary hard drive
492574-001
Secondary hard drive connector board (required for installation of secondary hard drive) 495027-001
Secondary hard drive system connector board (required for installation of secondary hard
drive)
495028-001
NOTE: The optional secondary hard drive is installed in the optical drive bay, and replaces the
optical drive.
Before removing the secondary hard 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.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery. (See
Battery on page 46)
5. Remove the switch cover and keyboard. (See
Switch cover and keyboard on page 62)
Remove the secondary hard drive:
1. Close the display, and position the computer upside down, with the right side toward you.
Component replacement procedures 67