Hardware reference guide

Hardware Upgrades
Installing DDR-SDRAM DIMMs
CAUTION: The memory module sockets have gold metal contacts. When upgrading the
memory, it is important to use memory modules with gold metal contacts to prevent
corrosion and/or oxidation resulting from having incompatible metals in contact with each
other.
CAUTION: Static electricity can damage the electronic components of the computer or
optional cards. Before beginning these procedures, ensure that you are discharged of
static electricity by briefly touching a grounded metal object. Refer to Appendix F,
“Electrostatic Discharge” for more information.
CAUTION: When handling a memory module, be careful not to touch any of the contacts.
Doing so may damage the module.
1. If you have locked the Smart Cover Lock, use Computer Setup to unlock the
lock.
2. Turn off the computer properly through the operating system, then turn off any
external devices.
3. Disconnect the power cord from the power outlet and disconnect any external
devices.
4. Remove the computer access panel and front bezel.
CAUTION: Check the position of all cables and wires before raising or lowering the Easy
Access drive bay to prevent damage.
2-10 Hardware Reference Guide