ENPC TECNOLOGY CORPORATION

EP-KB22 (REV. A)

Device Type Mainboard
Processor Pentium II (2)
Processor Speed 233/266/300/333/350/375/400/450/500MHz
Chip Set Intel 440BX
Maximum Onboard Memory 1024MB (EDO & SDRAM supported)
Cache 256/512KB (located on the Pentium II CPU)
BIOS Award
Dimensions 305mm x 215mm
I/O Options 16-bit ISA slots (2), 32-bit PCI slots (5), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port,  serial ports (2), IR connectors (2), USB ports (2), ATX power connector, AGP slot, Wake on LAN connector


CONNECTIONS
Purpose

Location

 Purpose

Location
AGP slot

AGP

Turbo LED CN14/Pins 7 & 8
ATX power connector

ATX

IDE interface LED CN14/Pins 9 & 10
PS/2 mouse port CN1 Speaker CN14/Pins 11 - 14
USB port 1 CN2 Power LED & keylock CN14/Pins 15 - 19
USB port 2 CN3 CPU fan 1 power FAN1
Parallel port CN4 CPU fan 2 power FAN2
Serial port 2 CN5 Front panel fan power FAN3
Serial port 1 CN6 IR 1 connector IR1
Floppy drive interface CN10 IR 2 connector IR2
IDE interface 2 CN11 16-bit ISA slots IS1-IS2
IDE interface 1 CN12 32-bit PCI slots

PC1 - PC5
Wake on LAN connector CN13 Unidentified RT1
Reset switch CN14/Pins 1 & 2 Thermal sensor 1 RT2
Power switch CN14/Pins 5 & 6 Thermal sensor 2 RT3


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

 CMOS memory normal operation JP1 Pins 1 & 2 closed
  CMOS memory clear JP1 Pins 2 & 3 closed


DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

8MB

(1) 1M x 64

None

None

None

16MB

(1) 1M x 64

(1) 1M x 64

None

None

16MB

(1) 2M x 64

None

None

None

24MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

None

32MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

32MB

(1) 2M x 64

(1) 2M x 64

None

None

32MB

(1) 4M x 64

None

None

None

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

None

64MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

64MB

(1) 4M x 64

(1) 4M x 64

None

None

64MB

(1) 8M x 64

None

None

None

80MB

(1) 4M x 64

(1) 4M x 64

(1) 1M x 64

(1) 1M x 64

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

None

96MB

(1) 4M x 64

(1) 4M x 64

(1) 2M x 64

(1) 2M x 64

128MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

128MB

(1) 8M x 64

(1) 8M x 64

None

None

128MB

(1) 16M x 64

None

None

None

144MB

(1) 8M x 64

(1) 8M x 64

(1) 1M x 64

(1) 1M x 64

160MB

(1) 8M x 64

(1) 8M x 64

(1) 2M x 64

(1) 2M x 64

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

None

192MB

(1) 8M x 64

(1) 8M x 64

(1) 4M x 64

(1) 4M x 64

256MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

256MB

(1) 16M x 64

(1) 16M x 64

None

None

256MB

(1) 32M x 64

None

None

None

272MB

(1) 16M x 64

(1) 16M x 64

(1) 1M x 64

(1) 1M x 64

288MB

(1) 16M x 64

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

320MB

(1) 16M x 64

(1) 16M x 64

(1) 4M x 64

(1) 4M x 64

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

None

384MB

(1) 16M x 64

(1) 16M x 64

(1) 8M x 64

(1) 8M x 64

512MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

512MB

(1) 32M x 64

(1) 32M x 64

None

None

528MB

(1) 32M x 64

(1) 32M x 64

(1) 1M x 64

(1) 1M x 64

544MB

(1) 32M x 64

(1) 32M x 64

(1) 2M x 64

(1) 2M x 64

576MB

(1) 32M x 64

(1) 32M x 64

(1) 4M x 64

(1) 4M x 64

640MB

(1) 32M x 64

(1) 32M x 64

(1) 8M x 64

(1) 8M x 64

768MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

None

768MB

(1) 32M x 64

(1) 32M x 64

(1) 16M x 64

(1) 16M x 64

1024MB

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64

(1) 32M x 64
Note: Board supports EDO & SDRAM memory.


CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium II CPUs.


CPU MULTIPLIER SELECTION

Multiplier

JP2/Pins 1 & 2 JP2/Pins 3 & 4 JP2/Pins 5 & 6 JP2/Pins 7 & 8

2.5x

Closed Closed Open Closed

3x

 Closed Open Closed Closed

3.5x

 Closed Open Open Closed

4x

 Open Closed Closed Closed
4.5x Open Closed Open Closed
5x Open Open Closed Closed
5.5x Open Open Open Closed