Intel JN440BX (Juneau)
Logs
chipChipset
cpuSocket
speedFSB speeds
66MHz100MHz
moboForm factor
NLX (max 229 x 345 mm)
dimDimensions
254mm x 218mm
ramMax VRAM size
4MB
chipCache
None/Integrated in the CPU
ramMax RAM size
768MB
ramRAM type
SDR UDIMM
pwrPSU connector
tag Also known as
connI/O ports
1x 
3.5mm Audio Combo
1x 
PS/2 keyboard
1x 
PS/2 mouse
1x 
Parallel
1x 
RJ-45 LAN
2x 
Serial
2x 
USB 1.x
1x 
VGA
cardExpansion slots
1x 
3.3V AGP
wrench Known issues
  • Underpowered VRM (in certain revisions)

Some revisions of this motherboard may have an underpowered VRM, which refers to a VRM that is lacking in either current delivery capability or thermal design margin. This can negatively impact system reliability, as the VRM is responsible for regulating the voltage supplied to the CPU and other components. An underpowered VRM can cause stability issues, crashes, or even damage to the components. Upgrading to a newer revision or replacing the VRM components may be necessary to ensure safe operation.

  • Expansion slots are on proprietary riser

The listed slots are on the riser card that came with the motherboard.
If you have this board make sure you have the riser for it.

notes Notes

Intel 82558 10/100 LAN, supports NLX risers with AGP port, CPUs faster than 450 MHz needs PCB revision 729002-406, 729001-406 or higher.

BIOS version 4J4NB0X1.86A.0035.P12 or later is required to support the Pentium III processor at 450 MHz on all JN440BX motherboard revisions.

BIOS revision 4J4NB0XA.86A.0037.P14 or later is required for the motherboard to properly support a 550 MHz processor.

BIOS Revision 4J4NB0X1.86A.0040.P17 or later is required for the Desktop Board to properly support 550E, 600E, 650,700, 750 and 800E MHz processors.

Last updated 2025-11-06T18:27:07Z
Board info score is 10/10
bios 9 BIOS files available

vendor Phoenix - 10 entries

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
4J4NB0X1.86A.0043.P20.0007251122
Note
Core version
Intel
BIOS version
Logs
POST string
4J4NB0X1.86A.0041.P18.0003160830
Note
Core version
Intel
BIOS version
Logs
POST string
4J4NB0X1.86A.0040.P17.9911301307
Note
Core version
Intel
BIOS version
Logs
POST string
4J4NB0X1.22A.0027.P15.9908101646
Note
NEC OEM
Core version
Intel
BIOS version
Logs
POST string
4J4NB0XA.86A.0037.P14
Note
Core version
Intel
BIOS version
P14-0037
Logs
POST string
4J4NB0X1.15A.0021.P13.9911301357
Note
Gateway OEM
Core version
Intel
BIOS version
Logs
POST string
4J4NB0X1.86A.0035.P12.9901282014
Note
Core version
Intel
BIOS version
Logs
POST string
4J4NB0X1.86A.0028.P09.9809151807
Note
Core version
Intel
BIOS version
Logs
POST string
4J4NB0X1.86A.0023.P07.9808050927
Note
Core version
Intel
BIOS version
Logs
POST string
4J4NB0X1.86A.0008.P02.9803201457
Note
Core version
Intel
BIOS version
Logs
drv 17 drivers available
Name
Version
OS support
Arch
Size
Filename
Name
Version
N/A
OS support
MS-DOS
Arch
x86
Size
195KB
Filename
Name
Version
N/A
OS support
OS/2 Warp 3.x OS/2 Warp 4.x
Arch
x86
Size
281.5KB
Filename
Name
Version
4.10.1.3000
OS support
Windows 2000 Windows 9x
Arch
x86
Size
89.1KB
Filename
Name
Version
N/A
OS support
Windows 9x
Arch
x86
Size
2.8MB
Filename
Name
Version
PV2860
OS support
Windows 9x
Arch
x86
Size
932.8KB
Filename
Name
Version
2.00
OS support
Windows 3.1x
Arch
x86
Size
880.7KB
Filename
Name
Version
N/A
OS support
Windows NT 3.5x
Arch
x86
Size
1.7MB
Filename
Name
Version
N/A
OS support
Windows NT 4.0
Arch
x86
Size
1.7MB
Filename
Name
Version
3.20.1008
OS support
Windows 2000 Windows 9x Windows XP/2k3
Arch
Size
Empty
Filename
Name
Version
4.35
OS support
Windows 9x
Arch
x86
Size
1.6MB
Filename
Name
Version
3.7B / 3.7D
OS support
MS-DOS NetWare Server 3 NetWare Server 4 OS/2 Warp 3.x Windows 3.1x Windows 9x Windows NT 3.5x
Arch
x86
Size
1.6MB
Filename
doc 7 board documents available
Release date
File
Logs
Release date
File
Logs
Release date
File
Logs
Release date
File
Logs
Release date
File
Logs
Release date
File
Logs
Release date
File
Logs
Release date
File
Logs

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