Jetway Computer NC9NDL - Manual (Page 23)

18
(8) TX-RX (4-pin): RS422/485 Header
Pin 1
RX
DP
TX
D
N
TX
D
P
2
RX
D
N
3
4
(9) SPEAK1 (4-pin): Speaker Header
This 4-pin header connects to the case-mounted speaker. See the figure below.
(10) PWR LED1 (3-pin): Power LED Header
The Power LED is light on while the system power is on. Connect the Power LED
from the system case to this pin header.
SPEAK1
SPK
+
NC NC SPK
-
Pin 1
PWRLED1
Pin 1
PW
R
L
E
D
+
PW
R
L
ED
-
PW
R
L
E
D
-