Page 1
M525 JUMPER SETTING CHART
K/B BIOS
IO
Chips
Power Supply
Connector
JP13
JP14
USB
DIMM
IDE1 IDE2
ISA SLOT
PCI SLOT
SIMM
Socket
DIMM
Socket
COM1
COM2
1
J1
JP7
PRN FDC
1
1
1
JP3
1
1
1
VRM
JP15
JP6
JP5
JP8
JP11
JP12
J10
J11
J8
J9
JP1
JP2
PS/2
MOUSE
J3
J2
Page 2
Jumper Setting
J1 Keyboard Connector
A standard five-pin female DIN Keyboard connector is located at the rear of
the board J1.
Pin
Description
1
Keyboard Clock
2
Keyboard Data
3
N.C.
4
Ground
5
+5VDC
JP1 JP2 DIMM Module Voltage Selector
Description
JP2 JP1
For SDRAM DIMM
Module (3.3V)
For EDO DRAM/Fast Page
DRAM DIMM Module (5V)
J3 PS/2 Mouse Connector
Pin
Description
1
Mouse Data
2
N.C.
3
Ground
4
+5V
5
Mouse CLK
6
N.C.
USB Set of Univeral Serial Bus Connector
Pin
Description
1,2
+5VDC
3,4
Data -
5V
3.3V
1
5V
3.3V
1
Page 3
5,6
Data+
7,8
Ground
9,10
Ground
J11 RST (Reset Switch Connector)
Setting
Description
Open
Normal Mode
Short
Reset System
J9 KEYLOCK (Keylock & Power LED Connector)
Pin
Description
1
LED Output
2
N.C.
3
Ground
4
Keylock
5
Ground
J8 SPK (Speaker Connector)
Pin
Description
1
Speaker Out
2
Ground
3
Ground
4
5V
JP8 Flash ROM Voltage Jumper
Description
JP8
12Volt Flash
programming
(Default)
5Volt Flash
programming
J10 HDD LED (Hard Disk LED Connector)
Setting
Description
Open
Normal Mode
5V
12V
Page 4
Short
Reset System
JP5 JP6 CPU Speed Jumpers
CPU
Clock
66MHz
60MHz
50MHz
JP6
JP5
JP11 JP12 CPU Internal Clock Speed Selectors
Intel
Cyrix
AMD
JP11
JP12
2.0X
2.0X
Reserved
1.5X
Reserved
1.5X
2.5X
Reserved
Reserved
3.0X
Reserved
Reserved
JP15 CPU Voltage Regulator Output Selectors
Description
JP15
3.5Volt (VRE)
(Default)
3.3Volt (STD/VR)
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