NEC Versa 550 Series Service Manual page 39

For NEC Versa 500D (1) notebooks, the following memory configuration are applicable:
On-Board Memory
4MB
4MB
4MB
4MB
For NEC Versa 550D(2) and NEC Versa 550D notebooks, the following memory configu-
ration are applicable:
On-Board Memory
8MB
8MB
8MB
8MB
To upgrade the memory on the notebook, follow the steps below:
1. Power off the computer and remove the AC adapter and battery pack.
Turn the notebook upside down with the base facing up. Locate the memory
2.
compartment cover which is secured with two small retaining screws and remove
them. Inside you will find one memory expansion slot.
Remove the extra SIMM module from its anti-static wrapping. Make sure that
3.
you are properly grounded before handling the memory module. Hold the memory
module with its connector pointed towards the memory socket. Hold the module
at 60-degrees (see Figure 1-19) and gently connect it to the memory socket by
pushing it forward.
Slowly push the module downwards until the locking tabs snap into the retaining
4.
notches or holes at each corner edge of the module.
5. Replace the cover back and secure retaining screws.
6. Connect the AC adapter and replace battery pack.
Power on the notebook and notice the BIOS error message informing you that the
7.
memory size stored in CMOS does not match the installed memory size. Press F2
to run the SETUP program and save the current CMOS settings. The computer
will automatically adjust the memory size to match the installed one.
Extra Socket Total Memory
empty 4MB
4MB 8MB
8MB 12MB
16MB 20MB
Extra Socket Total Memory
empty 8MB
4MB 12MB
8MB 16MB
16MB 24MB
Technical Information 1-27