Mainboard K8X250
13
Front USB Headers: JUSB1/JUSB2
This mainboard provides four USB 1.1/2.0 ports (back panel) that attach to USB devices.
There are also two additional USB headers that can be connected by cables to four more USB
ports on your PC’s front panel giving you a possible 8 USB ports.
Power Selection for USB Headers: JUSBV1/JUSBV3
USB devices attached to the back panel USB ports can awaken the system from sleep mode.
In order to enable this functionality, you must adjust the jumper caps on JUSBV1 or JUSBV3
headers for +5V or +5VSB mode depending on which USB port that the USB device is attached
to.
Note:
Close stands for putting a jumper cap onto two header pins.
Pin
Assignment
Pin
Assignment
1 +5V
(fused)
2 +5V
(fused)
3 USB-
4 USB-
5 USB+
6 USB+
7 Ground
8 Ground
1
2
10
JUSB1/JUSB2
9 Key
10
N/A
JUSBV1/3
Assignment
Assignment
1
Pin 1-2 Close
+5V
JUSBV1:
+5V for JUSB3.
JUSBV3:
+5V for JUSB1/2.
1
Pin 2-3 Close
+5VSB
JUSBV1:
JUSB3 is powered with +5V
standby voltage.
JUSBV3:
JUSB1/2 are powered with
+5V standby voltage.
Attention
If you are using a USB 2.0 device with Windows 2000/XP, you will
need to install the USB 2.0 driver from the Microsoft
®
website. If you
are using Service pack 1 (or later) for Windows
®
XP, and using
Service pack4 (or later) for Windows® 2000, you will not have to install
the driver.
