2GB DDR3-1066 (PC3-8500) RAM Memory Upgrade for The IBM ThinkPad T400 Series T400 (7417P5U) (Genuine A-Tech Brand) at Amazon.com
Lenovo ThinkPad Laptop Computer T400 14" Dual Core 2.0GHz 8GB 500GB Windows 10-64 Pro WiFi
Lenovo ThinkPad T400 Series | Memory RAM & SSD Upgrades | Crucial.com
Lenovo T400 memory, hard drive, and keyboard replacement - YouTube
Memory RAM | 8GB Kit (2x4GB) - Lenovo ThinkPad T400 T-Series - (OEM-# Dual-Kit (2x 55Y3711, 55Y3717, 78Y7385, 89Y9225)) - 1333MHz, Unbuffered, 1,5V
Memory RAM | 4GB - Lenovo ThinkPad T400 T-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385, 89Y9225 (R.2)) - 1333MHz, Unbuffered, 1,5V
Lenovo ThinkPad T400 Series | Memory RAM & SSD Upgrades | Crucial.com
Simmtec 4GB RAM Memory Upgrade for Lenovo ThinkPad T400 (DDR3-1333MHz 204-pin | eBay
Lenovo ThinkPad Laptop Computer T400 14" Dual Core 2.0GHz 8GB 500GB Windows 10-64 Pro WiFi
Lenovo ThinkPad T400 Disassembly (Clean Cooling Fan, Remove Keyboard) | MyFixGuide.com
![T400] Persistent 1-3-3-1 beep error after attempted 2GB --> 8GB RAM upgrade : r/thinkpad](https://preview.redd.it/kor2ttzbdea81.png?width=846&format=png&auto=webp&s=351a2f9ea41024fdb2ffe4d17ae313f07b49bea1 "T400] Persistent 1-3-3-1 beep error after attempted 2GB --> 8GB RAM upgrade : r/thinkpad")
T400] Persistent 1-3-3-1 beep error after attempted 2GB --> 8GB RAM upgrade : r/thinkpad
4GB Upgrade for a Lenovo ThinkPad T400 Series System (DDR3 PC3-12800, Non-ECC, ) at Amazon.com
8GB 2X4GB Memory RAM for Lenovo ThinkPad T400 2764 204pin 1066MHz PC3-8500 DDR3 SO-DIMM Black Diamond Memory Module Upgrade - Newegg.com
4GB Memory RAM High Speed Upgrade for Lenovo ThinkPad T400 T500. at Amazon.com
CMS 8GB (2X4GB) DDR3 8500 1066MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad T400 2764, 2765, 2766, 2767, 2768 - A35 at Amazon.com
8GB Kit (2x4GB) Memory RAM Upgrade for Lenovo Thinkpad T400, T500 | eBay
Seifelden 4GB (2X2GB) Memory RAM for IBM ThinkPad T400 Laptop Memory Upgrade - Walmart.com
OFFTEK 4GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad T400 (6475-xxx) (DDR3-8500) Laptop Memory at Amazon.com
Memory RAM Upgrade for Lenovo ThinkPad T400 (2764) 4GB DDR3 SODIMM | eBay
Hands On: Keeping a very old laptop useful with Linux | ZDNET
Seifelden 2GB (2X1GB) Memory RAM for IBM ThinkPad T400 Laptop Memory Upgrade - Walmart.com
CMS 8GB (2X4GB) DDR3 8500 1066MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad T400 2764, 2765, 2766, 2767, 2768 - A35 at Amazon.com
Lenovo Laptop T400 Motherboard Replacement - iFixit Repair Guide
