OFFTEK 4GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R400 Series (DDR3-10600) Laptop Memory at Amazon.com
Lenovo ThinkPad R400 specifications
Lenovo ThinkPad R400 14" Laptop For Parts NO Keyboard/Touchpad/HDD/RAM/Batt. JR | eBay
Lenovo Thinkpad R61i 15.4" HDD 250 Go T5450 3 Go Windows 7 Pro
For Lenovo Thinkpad T420 T510 W520 W510 T510i T520 R400 8X DVD RW RAM Double Layer DL Writer 24X CD Burner Optical Drive 12.7mm _ - AliExpress Mobile
OFFTEK 4GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R400 Series (DDR3-10600) Laptop Memory at Amazon.com
OFFTEK 4GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R400 (7447-xxx) (DDR3-8500) Laptop Memory at Amazon.com
4GB Team High Performance Memory RAM Upgrade Single Stick For Lenovo ThinkPad R400 Series R500 Series L aptop. The Memory Kit comes with Life Time Warranty. at Amazon.com
memory - Lenovo Thinkpad 400 beeps after installing 2x4GB RAM - Super User