A-Tech 8GB KIT (4 x 2GB) for Dell Optiplex 740 745c 755 DT/MT/SFF 760 DT/MT/ SFF 760 Series (Desktop Mini Tower and Small Form Factor) DIMM DDR2 Non-ECC PC2-6400 800MHz RAM Memory at
How to upgrade a DELL OptiPlex 755 USFF PC - YouTube
Dell Optiplex 745 Compact Computer (CMPUDL745C)
CMS 4GB (2X2GB) DDR2 5300 667MHZ Non ECC DIMM Memory Ram Upgrade Compatible with Dell® Optiplex Gx620 Dt/Mt/Sff - A88 at Amazon.com
1GB Memory Upgrade for Dell OptiPlex 755 SFF, DDR2 PC2-5300 667MHz Desktop Non-ECC DIMM RAM (PARTS-QUICK Brand) at Amazon.com
Optiplex 755 DT Hardware Upgrade - Dell Community
Dell Optiplex 755SFF Intel Core 2 DUO 2.66GHz 2GB RAM 160GB HDD Desktop PC | RecycledGoods.com
Dell OptiPlex 755 SFF Intel Core 2 Duo-E6750 @ 2.66GHz 2GB RAM No HDD No OS | eBay
Dell Refurbished OptiPlex 755 Desktop Intel Core 2 Duo 2GB Memory 160GB Hard Drive 755 SFF-0430 - Best Buy
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
Dell Optiplex 755 SFF Dual OS On 2 SSD Drives (256 GB MacOS + 256 GB Windows 10) | eBay
8GB 4X2GB Dell OptiPlex 755 Series Desktop/PC DDR2 PC2-5300 RAM Memory at Amazon.com
Restored Dell OptiPlex 755 SFF Desktop PC with Intel Core 2 Duo Processor, 4GB Memory, 1TB Hard Drive and Windows 10 Pro (Monitor Not Included) (Refurbished) - Walmart.com
8GB 4X2GB Dell OptiPlex 755 Series Desktop/PC DDR2 PC2-5300 RAM Memory at Amazon.com
any recommended upgrades? (755 SFF) - Dell Community
Used Dell OptiPlex 755 SFF Desktop PC with Intel Core 2 Duo Processor, 8GB Memory, 500GB Hard Drive and Windows 10 Pro (Monitor Not Included) - Walmart.com