Asus A7V8X - Manual (Page 48)

2-22 Chapter 2: Hardware information
7. ATX power connectors (20-pin ATXPWR1)
These connectors connect to an ATX 12V power supply. The plugs
from the power supply are designed to fit these connectors in only one
orientation. Find the proper orientation and push down firmly until the
connectors completely fit.
Make sure that your ATX 12V power supply can provide 8A on the
+12V lead and at least 1A on the +5-volt standby lead (+5VSB). The
minimum recommended wattage is 230W, or 300W for a fully
configured system. The system may become unstable and may
experience difficulty powering up if the power supply is inadequate.
A7V8X ®
A7V8X ATX Power Connectors
ATXPWR1
+3.3VDC
-12.0VDC
COM
PS_ON#
COM
COM
COM
-5.0VDC
+5.0VDC
+5.0VDC
PWR_OK
+12.0VDC
+3.3VDC
+3.3VDC
COM
+5.0VDC
COM
+5.0VDC
COM
+5VSB
8. Smart Card Reader connector (14-1 pin SMARTCON1)
This connector accommodates an optional Smart Card Reader that
allows you to conveniently make transactions such as financial, health
care, telephony, or traveling services through a Smart Card user
interface software.
A7V8X ®
A7V8X Smartcard Connector
SMARTCARD1
NC
SCPWR#
NC NC
NC2 VCC GND
SCIO SCRRES# NC
SCRCLK
1
NC
SCRREST