IBM All-in-One FC/Socket 370 Celeron, PCM-6890B manual Installing Dram DIMMs, System Memory

Installing DRAM (DIMMs)

System Memory

The left edge of the PCM-6890B contains a socket for 168-pin dual inline memory module (DIMM). The socket uses 3.3 V unbuffered synchronous DRAM (SDRAM). DIMM is available in capacities of 16, 32, 64, 128, or 256 MB. The socket can be filled in the DIMM of any size, giving your PCM-6890B single board computer between 16 and 258 MB of memory.

Supplementary information about DIMM

Your PCM-6890B can accept both regular and PC-100 SDRAM DIMM Module(with or without parity). However. The PCM-6890B can only accept PC-100 SDRAM Module.

Single-sided modules are typically 16 or 128MB; double-sided modules are usually 32 or 256 MB.

Memory Installation Procedures

To install SDRAM, first make sure the two handles of the SDRAM socket are in the "open" position. i.e. The handles remain outward. Slowly slide the SDRAM module along the plastic guides on both ends of the socket. Then press the SDRAM module right down into the socket, until you hear a click. This is when the two handles have automatically locked the memory module into the correct position of the SDRAM socket. (See Figure below) To take away the memory module, just push both handles outward, and the memory module will be ejected by the mechanism in the socket.

Chapter 2 Installation 15