HP xw4000 Hardware Reference Manual page 27

Hardware Reference Guide
4. Open both latches of the memory module socket 1 and insert the
memory module into the socket 2 .
Installing a DIMM
5. Begin by installing a module into the socket nearest the
preinstalled module and install the modules following the
numerical order of the sockets.
6. A memory module can be installed in only one way. Match the
notch on the module with the tab on the memory socket. Push the
module down into the socket, ensuring that the module is fully
inserted and properly seated and then secure the latches 3 .
7. Repeat steps 4 to 6 to install additional modules.
8. Replace the access panel.
9. If you normally lock the Smart Cover Lock, use Computer Setup
to relock the lock and enable the Smart Cover Sensor.
The computer should automatically recognize the additional memory
the next time you turn on the computer.
Hardware Upgrades
2–9