Jetway Computer NC74 - Manual (Page 19)

14
(3) USB Port Headers (9-pin): USB1
USB 1 Header
VC
C
Pin 1
-D
A
T
A
GN
D
+
D
AT
A
VC
C
NC
-
DA
T
A
GN
D
+D
A
T
A
(4) USB Port Headers (4-pin): USB2
USB2 Header
Pin 1
VC
C
-
DA
T
A
GN
D
+
D
AT
A
(5) Speaker connector: SPEAK
This 4-pin header is to connect the case-mounted speaker. See the figure below.
(6) Power LED: PWRLED
The Power LED is light on while the system power is on. Connect the Power LED
from the system case to this pin.