NR115 Motherboard
3
NR115 Motherboard Layout
A
CPU
Socket G
Jumper
Connector
B
CPU Fan Socket
H
Front Panel Connector
C
Memory Sockets
I
Front Side USB
D
Power Supply Connector
J
Expansion Slots
E
Floppy Connector
K
Audio Connector
F
IDE Connectors
L
Back Panel Connectors
Front Panel Connector Pin Definition
Pin
Signal Name
I/O
Description
1
HD_PWR
O
Hard Disk LED pull-up to VCC
2
HDR_BLNK_GRN
O
Front panel Green LED signal
3
HDA*
O
Hard Disk Active LED signal
4
HDR_BLNK_YEL
O
Front panel Yellow LED signal
5 GND
- Ground
6
FPBUT_IN
I
Front panel On/Off button signal
7
FP_RESET*
I
Front panel Reset button signal
8 GND
- Ground
9 VCC
O
10
FPSLP*
I
Front panel sleep button signal
11
IRRX
I
IRDA serial input
12 GND
- Ground
13 GND
- Ground
14
KEY
- KEY
15
IRTX
O
IRDA serial output
16 VCC
O
17
NC -
not
connected
18
NC -
not
connected
.
A
B
C
D
D
E
F
H
G
J
K
L
I
