Specifications

Expansion memory modules
NOTE: There are two memory slots. Expansion memory is installed in a compartment containing a
single slot (slot 2) on the bottom of the computer and the primary memory is installed in a
compartment containing a single slot (slot 1) under the keyboard.
Slot 2 cannot be populated if slot 1 is not populated.
Description Spare part number
2-GB (PC3-10600, 1333-MHz, DDR3) 621565-001
4-GB (PC3-10600, 1333-MHz, DDR3) 621569-001
8-GB (PC3-10600, 1333-MHz, DDR3) 634091-001
Update BIOS before adding memory modules
Before adding new memory, make sure you update the computer to the latest BIOS.
CAUTION: Failure to update the computer to the latest BIOS prior to installing new memory may
result in various system problems.
To update BIOS:
1. Navigate to
www.hp.com.
2. Click Support & Drivers > click Drivers & Software.
3. In the Enter a product name/number box, type the computer model information, and then click
Search.
4. Click the link for the computer model.
5. Select the operating system, and then click Next.
6. Under Step 2: Select a Download, click the BIOS link.
7. Click the link for the most recent BIOS.
8. Click the Download button, and then follow the on-screen instructions.
Before removing the memory module, 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 49).
5. Remove the bottom cover (see
Bottom cover on page 51).
Component replacement procedures 63