ENPC TEHNOLOGY CORPORATION

EP-KB21 PLUS (REV. A)
Device Type Mainboard
Processor Pentium II
Processor Speed 233/266/300/333/350/400/450/500MHz
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 170mm
I/O Options 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, SB-Link connector

 


CONNECTIONS

Purpose

Location

Purpose

Location

AGP slot

AGP

IDE interface 1 CN12
ATX power connector

ATX

SB-Link connector CN13
PS/2 mouse port CN1 Reset switch CN14/Pins 1 & 2
USB port 1 CN2 Power switch CN14/Pins  5 & 6
USB port 2 CN3 Turbo LED CN14/Pins 7 & 8
Parallel port CN4 IDE interface LED CN14/Pins 9 & 10
Serial port 2 CN5 Speaker CN14/Pins 11-14
Serial port 1 CN6 Power LED & keylock CN14/Pins 15-19
CPU fan power FAN1 Thermal sensor CN15
Chassis fan power FAN2 IR 1 connector IR1
Wake on LAN connector CN9 IR 2 connector IR2
Floppy drive interface CN10 32-bit PCI slots

PC1 - PC5
IDE interface 2 CN11    


USER CONFIGURABLE SETTINGS

Function

Label

Position

 

 Keyboard power on disabled JP1 Pins 1 & 2 closed
  Keyboard power on enabled JP1 Pins 2 & 3 closed
» CMOS memory normal operation JP2 Pins 1 & 2 closed

 

 CMOS memory clear JP2 Pins 2 & 3 closed
  External clock speed auto-detect enabled JP3 Closed
  External clock speed auto-detect disabled JP3 Open


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.