M537
{ Data from M537 manual }
Keyboard Connector
| Pin |
Description |
| 1 |
Keyboard Clock |
| 2 |
Keyboard Data |
| 3 |
N.C. |
| 4 |
Ground |
| 5 |
+ 5VDC |
Power Supply Connectors
| Pin |
Description |
Pin |
Description |
| 1 |
Power Good |
7 |
Ground |
| 2 |
+ 5V DC |
8 |
Ground |
| 3 |
+ 12V DC |
9 |
- 5V DC |
| 4 |
- 12V DC |
10 |
+ 5V DC |
| 5 |
Ground |
11 |
+ 5 V DC |
| 6 |
Ground |
12 |
+ 5V DC |
M537 Mainboard
CMOS RAM Discharge Jumper
 |
DIMM Moduile Voltage Selector
 |
J3: RST (Reset Switch Connector)
| Setting |
Description |
| Open |
Normal Mode |
| Short |
Reset System |
J3: KEYLOCK (Keylock & Power LED Connector)
| Pin |
Description |
| 1 |
LED Output |
| 2 |
N.C. |
| 3 |
Ground |
| 4 |
Keylock |
5 |
Ground |
J3 TB LED (Turbo LED Connector)
| Pin |
Description |
| 1 |
Anode(+) |
| 2 |
Cathode(-), Ground |
J3 SPK (Speaker Connector)
| Pin |
Description |
| 1 |
DATA Out |
| 2 |
N.C. |
| 3 |
Ground |
| 4 |
+ 5V |
J3 HDD LED (Hard Disk LED Connector)
| Pin |
Description |
| 1 |
5V |
| 2 |
Active Low |
CPU Speed Jumpers
 |
CPU Internal Clock Speed Jumpers
 |
Flash ROM Voltage Jumper
 |
JP6-A, B, C, D:CPU Voltage Regulator Output
 |
PS1: PS/2 Mouse Connector
| Pin |
Description |
| 1 |
Mouse Data |
| 2 |
N.C. |
| 3 |
Ground |
| 4 |
+5V |
| 5 |
Mouse CLK |
| 6 |
N.C. |
USB1: 2 Sets of Universal Serial Bus Connector
| Pin |
Description |
| 1,2 |
+5 VDC |
| 3,4 |
Data - |
| 5,6 |
Data + |
| 7,8 |
Ground |
| 9,10 |
Ground |