PowerTech MB457
Logs
chipChipset
cpuSockets
Socket 3 (PGA237) QFP208
speedFSB speeds
25MHz33MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
Empty
chipCache
None/Integrated in the CPU
ramMax RAM size
Empty
ramRAM types
30-pin SIMM72-pin FPM
pwrPSU connector
AT (6-pin P8 + 6-pin P9)
connI/O ports
1x 
AT Keyboard
cardExpansion slots
5x 
16-bit ISA
1x 
8-bit ISA
wrench Known issues
  • Leaky Ni-Cd clock battery

The Ni-Cd battery may be leaking, risking damage to PCB layers & nearby components. Promptly remove the battery & clean corrosion/alkaline salts from the board. Use white vinegar to dissolve salts, but exercise caution as vinegar can corrode exposed metals. A thorough examination & repair may be needed. Replace battery with guide: https://github.com/wiretap-retro/Not-A-Varta

notes Notes

Same board as Pine PT-2068.1

Last updated 2025-11-25T19:31:35Z
Board info score is 7.2/10
chip Chips
-> Chipset part
UMC UM8496 UMC UM8498F
cpufam CPU family support
bios 2 BIOS files available

vendor Award - 4 entries

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
05/24/95-UMC-498GP-2C4X6000-00
Note
Core version
4.50G
BIOS version
Logs
POST string
12/20/94-UMC-498GP-2C4X6000-00
Note
Core version
4.50G
BIOS version
Logs
POST string
10/20/94-UMC-498GP-2C4X6000-00
Note
Core version
4.50G
BIOS version
MB45XB
Logs
POST string
02/07/95-UMC-498GP-2C4X6000-00
Note
Core version
4.50G
BIOS version
Logs
drv No drivers available
doc No board documents available
Family
Release date
File
Logs
Family
Release date
1996-03
File
Logs
Family
Release date
1995-07
File
Logs
Family
Release date
1995-10
File
Logs
Family
Release date
1995-12
File
Logs
Family
Release date
1989-04
File
Logs
Family
Release date
1990
File
Logs
Family
Release date
1992-10
File
Logs
Family
Release date
1992-02
File
Logs
image1 Image 1 of 3 (Logout)
image2 Image 2 of 3 (Thomas Wolfe)
image3 Image 3 of 3 (BreakPoint)

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