8GB (4GBx2) Team High Performance Memory RAM Upgrade For Dell Precision T3400 Workstation. The Memory Kit comes with Life Time Warranty. at Amazon.com
Dell Precision T3400 1TB HDD Intel® Core™2 Quad Processor Q6600 8GB Windows 10 Pro - GeForce GT220
4Gb (2X2Gb) Memory RAM Compatible with Dell Precision Workstation T3400 By CMS A88 - Computer Memory Solutions
Restored Dell Precision T3400 Desktop PC Workstation System Intel 3.0GHz Core 2 Duo Processor 8GB Ram 1TB Hard Drive DVDRW Windows 10 Professional with 22" Dual Screen Dell LCD's Computer (Refurbished) - Walmart.com
Dell T3400 Memory for sale | eBay
Dell Precision T3400 Tower Workstation, 8GB, 1TB Windows 10 Pro and WIFI
Refurbished Dell Precision T3400 4GB Computers | Build a Workstation
8GB (2 X 4GB) Memory for Dell Precision Workstation T3400 DDR2 800MHz PC2-6400 240 pin Desktop DIMM RAM (PARTS-QUICK Brand) at Amazon.com