User`s manual

SQ575
12
Pin Signal Name Pin Signal Name
1 Ground 2 DENSEL
3 Ground 4 TP
5 Key 6 FDENIN#
7 Ground 8 FDINDX#
9 Ground 10 FDM00#
11 Ground 12 FDDS1#
13 Ground 14 FDDS0#
15 Ground 16 FDM01#
17 MSEN1 18 FDDIR#
19 Ground 20 FDSTEP#
21 Ground 22 FDWD#
23 Ground 24 FDWE#
25 Ground 26 FDTRK0#
27 MSEN0 28 FDWPD#
29 Ground 30 FDRDATA#
31 Ground 32 FDHEAD#
33 Ground 34 DSKCHG#
WARNING: When you connect a ribbon cable to this port, you must orient the cable
connector so that the PIN 1 edge of the cable is at the PIN 1 end of the on-board port.
3.5.4 Universal Serial Bus (USB) (J11 and J12)
This SQ575 mainboard has two USB on-board header. USB devices provide a more
convenient operating environment and improve data transferring capacity. True Plug-and-
Play, this new bus technology will support over 127 different peripherals through a Hub.
Pin Signal Name (USB1/USB2)
1 +5V
2 USB0-
3 USB0+
4 Ground
5 Ground
WARNING: When you connect a ribbon cable to these ports, you must orient the cable
connector so that the PIN 1 edge of the cable is at the PIN 1 end of the on-board connector.
3.5.5 Power Input Connector (20-pin block) (J5)
This connector supports a standard ATX power supply. When connecting, make sure the lock
key matches the hook attached on a power supply cable. The power cord should be unplugged
when you connect it.
Pin Name (Function)
1 +5V (Power +5 Voltage)
2 +5V (Power +5 Voltage)
3 +5V (Power +5 Voltage)
4 -5V (Power -5V Voltage)
5 Ground (Power Ground)
6 Ground (Power Ground)
7 Ground (Power Ground)
8 Ground (Power Ground)
9 -12V (Power –12V Voltage)
10 +12V (Power +12V Voltage)
11 +5V (Power +5 Voltage)
12 Power Good