HP zx2000 Technical Reference Manual page 28

Installing or Replacing Parts and Accessories
2. Holding the memory module by its left and right edges, insert the module into the socket.
❏
DDR SDRAM must be loaded as matched pairs. For example, if you place a memory
module of 1 GB in DIMM 0A, you must insert a 1 GB module in DIMM 0B. Matched
pairs should be loaded in sockets 0A and 0B first, and then in sockets 1A and 1B.
❏
To verify that DIMMs are matched pairs, make sure the HP part numbers are identical.
❏
It is not necessary for DIMMs in the two pairs to match. For example, you may install a
pair of 256 MB DIMMs in sockets 0A and 0B and a pair of 1 GB DIMMs in sockets 1A
and 1B.
Loading Order
NOTE: The memory modules are keyed and can only be inserted in one direction. When the
module is correctly seated, the retainer clips will return to their fully upright position. Snap the
clips firmly into place to ensure that the DIMMs are seated properly.
3. Replace the system covers, reconnect all cables, and turn on the system.
4. Execute the EFI shell info mem command to verify the new memory configuration.
For more information on EFI, see Chapter 3.
2–12
Location of power supply (reference point)
1st
2nd
1st
2nd
Memory DIMM Sockets
DIMM 0A
DIMM 1A
DIMM 0B
DIMM 1B
technical reference guide