Lenovo ThinkPad W520 Board Schematic, 10222-SA Kendo-3 Workstation
The Laptop MotherBoard Schematic For Lenovo ThinkPad W520 NoteBook & Laptop Board Schematic_Wistron Kendo_3 WS MainBoard♦
CPU ►Intel SandyBridge [QC]Board Schematic
►Discrete VGA NVIDIA N12P_Q1_Q3Board Schematic
Chipset ►Intel PCH Cougar Point Board Schematic