mITX-SKL-H – User Guide, Rev.1.1
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8.7.
Front Panel Connector (FRONTPNL) (J27)
Figure 16: Front Panel Connector
Table 20: Pin Assignment Front Panel Connector (J27)
Pin
Signal
Type
Ioh / Iol
Pull U / D
Note
1
VBUS
PWR
2
VBUS
PWR
3
USB2-D9-
USB 2.0
4
USB2-D10-
USB 2.0
5
USB2-D9+
USB 2.0
6
USB2-D10+
USB 2.0
7
GND
PWR
8
GND
PWR
9
NC
NC
10
LINE2-L
11
+5 V
PWR
12
+5 V
PWR
13
SATA_LED#
O
25 / 25 mA
14
SUS_LED
O
7 mA
15
GND
PWR
16
PWRBTN_IN#
I
1.1 KΩ
17
RSTIN#
I
4.7 KΩ
18
GND
PWR
19
SB3V3
PWR
20
LINE2-R
21
AGND
PWR
22
AGND
PWR
23
MIC2-L
AI
24
MIC2-R
AI
Signal Description
Signal
Description
VBUS
5 V supply for external devices. Standby 5 V is supplied during power down to allow wakeup on
USB device activity. Protected by active power switch 1 A fuse for each USB port.
/ D#-
Universal Serial Bus Differentials: Bus Data/Address/Command Bus
+5 V
Maximum load per pin is 1 A (using IDC connector) or 2 A (using crimp terminals)
SATA_LED#
SATA Activity LED (active low signal). 3.3 V output when passive open drain output
SUS_LED
Suspend Mode LED (active high signal) 3.3 V push-pull output
PWRBTN_IN#
Power Button In. Toggle this signal low to start the ATX / BTX PSU and boot the board
1
3
5
7
9
11
13
15
17
19
21
23
2
4
6
8
10
12
14
16
18
20
22
24
