VL-EPU-2610 Reference Manual
25
Interfaces and Connectors
User I/O Connector
The 50-pin user I/O connector (J12 or J8) incorporates the COM ports, four USB ports,
programmable LED, power LED, push-button reset, power button, audio line in/out, and speaker
interfaces. The table below illustrates the function of each pin. The pinout for this interface is
different for non-latching and latching connectors. Both pinouts are shown below.
Table 5: User I/O Connector Pinout
J12 Pin
1
Non-
Latching
J8 Pin
2
Latching
Paddleboard
Connector
Signal
J12 Pin
1
Non-
Latching
J8 Pin
2
Latching
Paddleboard
Connector
Signal
RS-232
RS-422/485
25
26
USB0
USB0 +5.0V
1
50
COM1
Ground
Ground
26
25
Data +
2
49
J3
RXD
RxD-
27
24
Data -
3
48
Top DB9
CTS
RxD+
28
23
USB1
USB1 +5.0V
4
47
Ground
Ground
29
22
Data +
5
46
TXD
TxD-
30
21
Data -
6
45
RTS
TxD+
31
20
USB2
USB2 +5.0V
7
44
COM2
Ground
Ground
32
19
Data +
8
43
J3
RXD
RxD-
33
18
Data -
9
42
Bottom DB9
—
RxD+
34
17
USB3
USB3 +5.0V
10
41
Ground
Ground
35
16
Data +
11
40
TXD
TxD-
36
15
Data -
12
29
—
TxD+
37
14
+5.0V (Protected)
13
38
COM3
Ground
Ground
38
13
D1
mSATA activity
14
37
J6
RXD
RxD-
39
12
SP1
Speaker
15
36
—
RxD+
40
11
S2, J8 Pin 1
Push-button Reset
16
35
Ground
Ground
41
10
S1, J8 Pin 3
Power Button
17
34
TXD
TxD-
42
9
Ground
18
33
—
TxD+
43
8
Audio In
Audio In - Left
19
32
COM4
Ground
Ground
44
7
J3 Top
HDA ground (isolated)
20
31
J5
RXD
RxD-
45
6
Audio In - Right
21
30
—
RxD+
46
5
HDA ground (isolated)
22
29
Ground
Ground
47
4
Audio Out
Audio Out - Left
23
28
TXD
TxD-
48
3
J3 Bottom
HDA ground (isolated)
24
27
—
TxD+
49
2
Audio Out - Right
50
1
HDA ground (isolated)
1. Models EBPN, ECPN, EDPN, EBKN, ECKN, EDKN.
2. Models EBPL, ECPL, EBKL, ECKL.
5