I have a keyboard (musical) module that I use for my synthesizers and it uses SIMMs for memory. I know (at least I'm almost positive) that SIMMs are older technology and it's been kinda tough to find a place that sells them. The requirements are- SIMMs: -72 pin -60ns or faster -FPM or EDO -Voltage: 5V -64MB/32MB/16MB (can be mixed) *Both parity and non-parity are supported. There are 2 slots avialable for SIMMs, and since the above says "can be mixed" I assume I don't need to install them in pairs (i.e. I just want one 64MB module right now). I found this on CDW's site: Kingston 64MB Module I don't want to buy used or through private sellers like eBay. I'd like to stick to reputable online places (i.e. Warehouse, CompUSA, CDW, Amazon, etc.). Also, it seems like the EDO is cheaper than the FPM. What's the difference? Also, what's the difference in parity and non-parity? Does $80 sound fair? I've seen used ones for $25 so I can't imagine finding new ones for any less than $50. Thoughts?