Amazon.com: Dell New Genuine OEM Optiplex 755 SFF Small Form Factor Motherboard Main Logic System Board Intel LGA fits 760 PU052 WF810 JR269 : Electronics
Crucial Technology 4GB kit (2GBx2) Upgrade for a Dell OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor) System (DDR2 PC2-6400, Non-ECC,) : Electronics
OptiPlex 755 Small Form Factor (SFF) Removal Guide for the System Cover, Optical Drive, Floppy Drive, Memory and Hard Drive | Dell UK
Dell Optiplex 755 MT, Upgrades, Boot - YouTube
Dell Optiplex 755 sff frame for 3,5 HDD - Dell Community
I need help finding a graphics card that is compatible and can fit in my Dell Optiplex 755 SFF - Graphics Cards - Linus Tech Tips