50 IBM : Hardware Maintenance Manual
• Use 3.3 V, synchronous, 168-pin, unbuffered, 133 MHz nonparity synchronous
dynamic random access memory (SDRAM)
• Use 32 MB, 64 MB, 128 MB, or 256 MB DIMMs in any combination
• DIMM heights of 38.1 mm (1.5 inches)
To install a DIMM:
1. Remove the cover. See “Removing the cover - microtower model” on page 44.
2. You might have to remove an adapter to gain access to the DIMM slots. See
“Installing adapters - microtower model” on page 51.
3. To locate the DIMM connectors. See “Identifying parts on the system board -
microtower model” on page 48.
4. Open the retaining clips.
5. Make sure the notches in the DIMM align with the tabs on the connector. Push or
insert the DIMM straight down into the connector until the retaining clips close.
Notches
• Replace any adapters that were removed.
• Replace the power supply.
• To work with another option, go to the appropriate section.
• To complete the installation, go to “Replacing the cover and connecting the
cables - microtower model” on page 56.
What to do next: