Source Laptop Mainboard for T410 T420 T430 T450 T460 T400 Notebook Motherboard Integrated System Board Fit for 04W0503 63Y1487 63Y1483 on m.alibaba.com
Salvaging T400 - Thinkpads Forum
Lenovo ThinkPad T400 Motherboard 42w1825 | eBay
42W8127-06 Lenovo System Board (Motherboard) for ThinkPad T400 (Refurbished)
Ougeda 41w1487 42w7868 14.1'' Inch Laptop Motherboard For Lenovo Thinkpad T61 Motherboard Ddr2 Free Cpu System Board Full Test - Laptop Motherboard - AliExpress
45N3819 IBM Lenovo System Board with ATI M82XT 256MB Video for ThinkPad T400 (Refurbished)
FRU60Y3757 Lenovo System Board (Motherboard) for ThinkPad T400 (Refurbished)