Chapter 3: Installation
3-171. Backpanel USB 0
2. Backpanel USB 1
3. Front Panel USB 2/3
4. Front Panel USB 4/5
5. Front Panel USB 6
6. Internal USB 7
Universal Serial Bus (USB)
Two Universal Serial Bus ports (USB
0/1) are located on the I/O back panel.
Five USB connections (USB 2/3, 4/5,
6) are located on the motherboard
to provide front chassis access. In
addition, USB 7, located next to Fan
6, provides internal USB support. (Ca-
bles are not included). See the tables
on the right for pin defi nitions.
Front Panel USB
Pin Defi nitions (USB4/5)
USB 2/3
Pin # Defi nition USB 4/5
Pin # Defi nition
1 +5V 1 +5V
2 PO- 2 PO-
3 PO+ 3 PO+
4 Ground 4 Ground
5 Key 5 NC
(NC= No connection)
Front Panel USB
(USB 6)
Pin# Defi nition
1 Vcc
2 Data-
3 Data+
4 Ground
5NA
Front Panel
USB
(USB 0/1)
Pin# Defi nition
1 +5V
2 PO-
3 PO+
4 Ground
5NA
X8DTU-LN4F+
Rev. 2.0
2
1
3
4
5
Internal USB
Pin Defi nitions (USB 7)
Pin # Defi ni-
tion Pin # Defi ni-
tion
1 PWR 2 Ground
3 USBD- 4 Ground
5 USBD+ 6 Ground
7 Ground 8 Ground
9 NA 10 Ground
6