
IPC-1600  80-Pin  Headers P3 and P4
PIN 40
PIN 41
P3 OR P4 
PIN 1
PIN 80
LEAD 1
IDENTIFIER
CABLE P4 CONNECTS TO P4 (PORTS 1 
CABLE P3 CONNECTS TO P3 (PORTS 9 

PIN 40
PIN 41
P3 OR P4 
PIN 1
PIN 80
LEAD 1
IDENTIFIER
CABLE P4 CONNECTS TO P4 (PORTS 1 
CABLE P3 CONNECTS TO P3 (PORTS 9