U p g r a d i n g

Adding more system memory

The computer’s motherboard is fitted with sockets for up to four SIMMs (single in-line memory modules). You may need to add more memory if you want to run complex operating systems or large application programs.

The SIMM sockets are located at the front of the motherboard. SIMMs with capacities of 2, 4, 8, 16 or 32 Mbytes are supported, giving a maximum capacity of 128 Mbytes. Extended Data Output (EDO) SIMMs can be used and will give enhanced performance, most noticeably in cacheless systems.

There are two pairs or banks of sockets. The sockets labelled MM1 and MM2 form Bank 1, the sockets labelled MM3 and MM4 form Bank 2. SIMMs must be fitted in identical pairs. In other words, you cannot have two different SIMMs in the same bank. It is best to fill Bank 1 first, then Bank 2. The table opposite shows all the supported memory configurations.

Hint

You cannot easily install a SIMM in a socket while the socket immediately next to it is occupied. You may therefore need to remove a SIMM before you can install one.

Installing and removing SIMMs

To locate the SIMM sockets:

1.Turn off the computer and unplug all power cords.

2.Take suitable anti-static precautions and remove the system unit cover.

If you are unfamiliar with the recommended anti-static precautions or the process of removing the system unit cover, refer to Appendix A, “Inside the System Unit”.

3.If there is a removable-media drive fitted, unplug its power and signal cables from the rear of the drive.

7/4 APRICOT 340 OWNER’S HANDBOOK