Jetway Computer NF81 - Manual (Page 18)

13
CIR Header
1 4
5V
S
B
CI
R
_RX
G
ND
CI
R L
ED
(5) Speaker connector: SPEAK1
This 4-pin connector connects to the case-mounted speaker. See the figure below.
SPEAK
SPEA
K
NC N
C
V
CC
Pin 1