OFFTEK 2GB Replacement Memory RAM Upgrade for Dell OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor) (DDR2-6400 - Non-ECC) Desktop Memory at Amazon.com
Computer Components The Memory Kit comes with Life Time Warranty. 2GB Team High Performance Memory RAM Upgrade Single Stick For Lenovo ThinkCentre A51 Series Type 8105 A51 Series Type 8107 All Models
OEM DELL Optiplex 755 MT Motherboard LGA755 0GM819 W/Core 2 Duo CPU and 4GB RAM 4060787282002 | eBay
A-Tech 8GB (4X 2GB) Max Memory RAM Kit for Dell OptiPlex 755, 745, 740, (MT, DT, SFF) - DDR2 667MHz PC2-5300 Non-ECC DIMM Upgrade at Amazon.com
Optiplex 755, ram - Dell Community
Installing RAM Memory in Dell Desktop (Optiplex GX755) - YouTube
8GB 2X4GB RAM Memory for Intel Desktop Board DG41TY Classic Series DDR2 DIMM 240pin PC2-5300 667MHz Black Diamond Memory Module Upgrade - Newegg.com
Refurbished: Dell Optiplex 755 A Grade Desktop PC with Intel Core 2 Duo 2.66GHz, 4GB RAM, 1TB HDD, DVDRW, Windows 7 Professional 64 Bit, Microsoft Authorized Recertified Desktop PC w/1 Year Warranty - Newegg.com
Dell Optiplex 755 Tower Intel Core 2 Duo 500GB HDD 4GB RAM Windows 10 Home