Asus P4S533-VM User Manual page 51

21. Serial IRQ connector (2 pin SIRQ1) (optional)
This connector supports the serial IRQ cable. This cable is required by
some PCI cards like those with PCMCIA function.
P4S533-VM
®
P4S533-VM SIRQ1 Connector
ASUS P4S533-VM motherboard user guide
SIRQ1
SERIRQ
GND
39