Laptop Memory Up-grade

SODIMM
My Notebook computer [HP ze4805wm]contains one 256 MB SO-DIMM [200-pin]. The SO-DIMM style is PC2100. The clock speed of PC2100 is 266MHZ.

The part number for the memory module which was supplied with the laptop is; Hewlett Packard (HP) Laptop / Notebook Memory: 317435001 / 317435-001. I was never able to find the cas latency.

I discovered I have two SO-DIMM slots so the plan is to up-grade the system with another 256MB PC2100 SO-DIMM, giving me 512MB of system memory. This allows me to keep the orginal 256MB. Ranging around $30 to $70 per stick.

SO DIMM = Small Outline Dual In-Line Memory Module.