HP ProBook 4320s Notebook PC HP ProBook 4321s ... - Warranty Life

Memory moduleDescriptionSpare part numberMemory module (PC3-10600, 1333-MHz, DDR3, shared)2048-MB 598856-0021024-MB 598859-002Before removing the memory module, follow these steps:1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turnthe 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 outletand then unplugging the AC adapter from the computer.4. Remove the battery (see Battery on page 51).5. Remove the switch cover (see Switch cover on page 53).6. Remove the keyboard (see Keyboard on page 55).NOTE: You can release the keyboard without removing the keyboard cable from the systemboard, and then rotate it right until it rests upside down on the right side of the computer toremove the memory modules.Remove the memory module:1. Position the computer right-side up with the front toward you.2. Spread the retaining tabs (1) on each side of the memory module slot to release the memorymodule. (The edge of the module opposite the slot rises away from the computer.)Component replacement procedures 57