Dell OptiPlex 755 Mini Tower Motherboard- GM819 – Buffalo Computer Parts
any recommended upgrades? (755 SFF) - Dell Community
OFFTEK 1GB Replacement Memory RAM Upgrade for Dell OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor) (DDR2-5300 - Non-ECC) Desktop Memory at Amazon.com
CMS 4GB (2X2GB) DDR2 6400 800MHZ Non ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex 755 Dt/Mt/Sff - A90 at Amazon.com