https://www.abclinuxu.cz/poradna/hardware/show/299169
Thinkpad T400 a jeho (ne)kvality
https://www.ifixit.com/en-gb/Parts/Lenovo_Laptop_T400
Lenovo ThinkPad T400 Parts | iFixit
Lenovo ThinkPad T400 parts for DIY repair. Batteries tested and guaranteed with fast shipping and easy returns.