Chapter 2: Installation
2-15
1. Keyboard
2. Mouse
3. Backpanel USB 0
4. Backpanel USB 1
5. Front Accessible USB 2/3
6. Front Accessible USB 4/5
7. FP USB 6
Universal Serial Bus (USB)
Two Universal Serial Bus ports (USB
0/1) are located on the I/O back panel.
In addition, two USB headers, located
close to the I-SATA ports, provide four
front-accessible USB connections
(USB 2/3, USB 4/5). A Type A con-
nector (USB 6) also supports front
panel USB connections. (Cables are
not included). See the tables on the
right for pin definitions.
FP USB (2/3, 4/5, 6)
Pin Definitions
USB 2, 4, 6
Pin # Definition
USB 3, 5
Pin # Definition
1
+5V
1
+5V
2
PO-
2
PO-
3
PO+
3
PO+
4
Ground 4
Ground
5
NC
5
Key
(NC= No connection)
Backplane USB
(USB 0/1)
Pin Definitions
Pin# Definition
1
+5V
2
PO-
3
PO+
4
Ground
5
NA
X9DRW-3LN4F+
Rev. 1.20
2
3
5
6
7
ATX PS/2 Keyboard and Mouse
Ports
The ATX PS/2 keyboard and PS/2
mouse are located next to the Back
Panel USB Ports 0/1 and the IPMI
LAN port on the motherboard. See the
table at right for pin definitions.
PS/2 Keyboard/Mouse Pin
Definitions
PS2 Keyboard
PS2 Mouse
Pin# Definition
Pin# Definition
1
KB Data
1
Mouse Data
2
No Connection
2
No Connection
3
Ground
3
Ground
4
Mouse/KB VCC
(+5V)
4
Mouse/KB VCC
(+5V)
5
KB Clock
5
Mouse Clock
6
No Connection
6
No Connection
VCC: with 1.5A PTC (current limit)
1
4
