User`s manual

VIA 693/693A Twin Processor Mainboard INSTALLATION
3-4
(B) CN1: PS/2 Mouse and Keyboard Connector
PS/2 Mouse Connector
PS/2 Keyboard Connector
+
123
4
A
B
C
(C) CN3 : Serial Port COM 1 Connector
(D) CN4 : Serial Port COM 2 Connector
COM 1COM 2
+
123
4
CN4
CN3
CN4 CN3
(I/O address: 3F8H/2F8H/3E8H/2E8H, IRQ3/IRQ4, selected by CMOS setup.)