Tom, try this: http://www.pcstats.com/ramfinder.cfm#toshiba 6 modules @ 16MB = 96MB...though six is a strange configuration I looked but didn't find anything with the TC516 prefix. http://www.toshiba.com/taec/cgi-bin/display.cgi?table=Category&CategoryID=7183 B57869 9838KBD TC5165165FTS-50 >Brian >Thanks for your response. >To me they two look identical...they say Vintage Computer...V10121 Rev >A...they are each comprised of 6, not 4 black rectangles, (as the sellers' >picture on ebay had 4) the black rectangles on each module have some common >numbers... >Toshiba ...B57869 >9838KBD >TC5165165FTS-50.. >Do these number sound familiar? >Thanks for your help >Tom Ralph Mawyer, Jr. San Antonio, Texas Associate Editor mac2400 ... http://www.sineware.com/mac2400 Your PowerBook 2400 Reference Site "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." Benjamin Franklin, 1759.