23 Getting StartedUseful InformationTroubleshootingAppendixExpanding MemoryUse RAM modules that comply with the specifications below. Using any other module may cause malfunction or resultin computer failure.RAM module specifications:DDR2 SDRAM, 172 pins, Micro DIMM, 1.8 V, PC2-4200CAUTIONz Use recommended RAM module products. Do not use non-recommended RAM modules. Non-recommended RAMmodules may not operate properly, and may cause damage to your computer. Some non-recommended RAM mod-ules may overheat, causing the cover to warp. Refer to various sources for recommended RAM module.z RAM modules are extremely sensitive to static electricity. There are cases where static electricity generated by thehuman body has adversely affected such RAM modules. When inserting or removing a RAM module, do not touchthe terminals or internal components, insert objects other than the module, or allow foreign particles to enter. Doingso has been known to cause damage, fire or electric shock.z Matsushita Electric Industrial Co., Ltd. will bear no responsibility whatsoever for failures or damage caused by theuse of non-recommended RAM modules, or by incorrect installation or removal of such RAM modules. Beforeinstalling a RAM module, confirm the product type and the correct installation method.PreparationA Turn off your computer.• Do not use the sleep or hibernation.B Disconnect the AC adaptor and remove the battery pack.C Remove the screw (A) and the cover on the bottom of the computer.• Use the appropriate screw driver so as not to strip the thread of screw.1 Place the RAM module lightly in parallel with the RAM module slot so that the notch (B)of the RAM module and the protrusion (C) of the RAM module slot is in the same direc-tion.z The gold terminals are visible at this point.z RAM module is at an angle of 20° - 30° with the horizontal line.Inserting the RAM Module