Acer Aspire 4251/4551, eMachines D440/D640 Board Schematic, JE40-DN
The Laptop Motherboard Schematic for Acer Aspire 4251, Acer Aspire 4551, Acer eMachines D440, Acer eMachines D640 laptop/notebook, Wistron HM42-DN/JE40-DN.
CPU: AMD Champlain S1G4 (45W) + ATI Madison
North Bridge: AMD RS880M
South Bridge: AMD SB820