Memory Installations
The following table shows several possible memory combinations. The P5VX-Be system board supports from 4-128MB. Memory can be installed in a single DIMM or in pairs of 72-pin SIMMs. All 168-pin DIMM modules must use unbuffered 3.3 volt RAM and supports up to a single 32MB EDO or SDRAM. All EDO modules should be the same access speed, parity / non-parity, and configuration (single-sided, double sided, etc.) within the banks.

Core Intel CPU Frequency

Host Clock

JP2

Clock Multiplier

JP11

JP12

75 MHz

50 MHz

1-2, 3-4, 5-6

1.5

1-2

1-2

90 MHz

60 MHz

3-4, 5-6

1.5

1-2

1-2

100 MHz

66 MHz

1-2, 5-6

1.5

1-2

1-2

120 MHz

60 MHz

3-4, 5-6

2

2-3

1-2

133 MHz

66 MHz

1-2, 5-6

2

2-3

1-2

150 MHz

60 MHz

3-4, 5-6

2.5

2-3

2-3

166 MHz

66 MHz

1-2, 5-6

2.5

2-3

2-3

200 MHz

66 MHz

1-2, 5-6

3

1-2

2-3

Cyrix 6x86

Core CPU Frequency

Host Clock

JP2

Clock Multiplier

JP11

JP12

P120+

100 MHz

50 MHz

1-2, 3-4, 5-6

2

2-3

1-2

P133+

110 MHz

55 MHz

1-2, 3-4

2

2-3

1-2

P150+

120 MHz

60 MHz

3-4, 5-6

2

2-3

1-2

P166+

133 MHz

66 MHz

1-2, 5-6

2

2-3

1-2

AMD K5

Core CPU Frequency

Host Clock

JP2

Clock Multiplier

JP11

JP12

PR75

75 MHz

50 MHz

1-2, 3-4, 5-6

1.5

1-2

1-2

PR90

90 MHz

60 MHz

3-4, 5-6

1.5

1-2

1-2

PR100

100 MHz

66 MHz

1-2, 5-6

1.5

1-2

1-2

PR120

90 MHz

60 MHz

3-4, 5-6

1.5

1-2

1-2

PR133

100 MHz

66 MHz

1-2, 5-6

1.5

1-2

1-2

Single Voltage CPU type

JP6

CPU I/O Voltage

JP5

Includes

• Intel Pentium® processor
• Pentium® Overdrive® processor
• Cyrix 6x86
• IBM 6x86
• AMD K5 ABQ

2-3

3.3v

1-2

3.525v

3-4

Dual Voltage CPU type

JP6

CPU I/O voltage

JP5

CPU Core voltage

JP7

Dual Voltage (Power Split) CPUs include

• Intel Pentium® processor with MMX™ technology
• Cyrix 6x86L
• IBM6x86L
• AMD K5 AHQ..., etc.

1-2

3.3v

1-2

2.5v

1-2

3.525v

3-4

2.8v

3-4

2.9v

5-6

Connector:

Function:

Description:

J1

PS/2 Keyboard (optional)

Connect to Mini-DIN PS/2 Keyboard (manufacturing option PS/2 keyboard & mouse or AT keyboard connection)

J2

J2 AT Keyboard connector

Connect to DIN-5 AT Keyboard

J3

PS/2 Mouse (optional)

Connect to Mini-DIN PS/2 Mouse (manufacturing option PS/2 mouse port w/ PS/2 keyboard port)

J4

Serial port #2

Connect to serial port #2 / bracket, can be configured COM2, COM4, or disabled

J5

PS/2 mouse 5-pin header

Connect to PS/2 cable mouse / bracket

J6

Serial port #1

Connect to serial port #1 / bracket, can be configured COM1, COM3, or disabled

J7

Dual port USB

Connect to 2 channel (connector) USB cable

J8

Parallel Port (LPT)

Connect to db-25 female parallel printer / bracket

J10

12-pin Power connector

Connect to power supply lead P8 and P9

J11

Floppy Drive Controller

34-Pin connector connects to 2-device cable; End device is A:, middle device is B:

J12

Secondary IDE

40-pin connector connects to supplied 2-device cable; attach to Secondary master / slave with supplied cable

J13

Primary IDE

40-pin connector connects to supplied 2-device cable; attach to Primary master / slave with supplied cable

J14

Green LED

Connect to the Suspend LED. Blinking LED indicates low-power suspend mode

J15

Hard Disk LED

Connect to the front panel Hard Disk activity LED

J16

Infrared (IR) connector for HP

Connects to Infra-Red cable / bracket

J17

Infrared (IR) connector for IBM

Connects to Infra-Red cable / bracket

J18

CPU Fan Connector

Connects to 2 or 3-pin CPU fan power connector

J20

Case features

Connections to front panel case features

• Pins 2-3: "Power ON" LED
• Pins 4-5: Suspend switch
• Pins 9-10: Reset Switch
• Pins 11-15: Keyboard Lock
• Pins 17-20: Speaker