This is a 128 SO-DIMM of 200 Pin PC2100 (266MHz) DDR SDRAM from my Powerbook 12".
It will work fine in any PC using this type of ram, a Powerbook 12" or an Apple iMac (17-inch 1GHz). I just bought a Powerbook 12" and don't need this extra DIMM. It was removed one day after I bought the machine, and is in perfect condition.
$20 including shipping in the continental US.
just post a response that you're interested and I'll send the info. thanks.