Acrosser AR-B1790 - Manual (Page 9)

AR-1790 User’s Guide
9
2.2 CPU INSTALLATION
This main board supports Intel Pentium 4/Celeron, Socket 478 series CPU. Please follow the step as below:
! Be careful of CPU orientation when you plug it into CPU socket.
! Pull up the CPU socket lever and up to 90°
! Locate Pin 1 in the socket and look for a black dot or cut edge on the CPU upper interface. Match Pin 1 and
cut edge, then insert into the CPU socket.