Gigabyte GA-486AM
chipChipset
cpuCPU socket
speedFSB speeds
25MHz33MHz40MHz50MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
250mm x 220mm
chipCache
128KB256KB512KB1MB
ramMax RAM size
128MB
ramRAM type
72-pin FPM
pwrPSU connector
connI/O ports
1x 
AT Keyboard
1x 
Floppy interface
2x 
IDE interface
1x 
Parallel
2x 
Serial
cardExpansion slots
4x 
16-bit ISA
3x 
32-bit PCI

Also known as:

  • Gigabyte GA-486AM/S (Ver 2.1A)
  • Gigabyte GA-486AM/S (Ver 2.20/2.21)

Known issues:

  • DALLAS RTC coin cell empty

The motherboard's Real-Time Clock (RTC) chip contains a coin cell that may have drained, causing the loss of CMOS settings. This can result in an inability to save settings, causing system instability or failure to boot. To fix this, the RTC chip can be replaced with an equivalent or repaired by cutting into it and soldering on a new external coin cell holder. Replacement guides are available at https://github.com/necroware/nwX287 or https://github.com/necroware/nw12887, depending on the actual chip used.

Notes:

Clock chip: UM9515-01

Last updated 2023-10-14T17:21:09Z
Score is 9.6/10
chipsetChipset
chipChipset parts
chipMiscellaneous chips
chipClock Synth / PLL chips
chipSuper I/O chips
chipReal-Time Clock chips
cpuCPU family support
6 files available

Vendor: Award [7 entries]

POST string
Note
Core Ver.
BIOS Ver.
Last edit
POST string
10/03/95-UMC-881/886A-2A4X5G0HC-00
Note
Core version
4.50PG
BIOS version
Last edit
pwr 2022-08-30
POST string
11/07/95-UMC-881/886A-2A4X5G0HC-00
Note
Core version
4.50PG
BIOS version
Last edit
pwr 2021-12-31
POST string
11/07/95-UMC-881/886A-2A4X5G0HC-00
Note
Core version
4.50PG
BIOS version
Last edit
pwr 2022-08-30
POST string
11/07/95-UMC-881/886A-2A4X5G09C-00
Note
Core version
4.50PG
BIOS version
Nov 7 1995
Last edit
pwr 2022-08-30
POST string
11/01/95-UMC-881/886A-2A4X5G0HC-00
Note
Core version
4.50PG
BIOS version
Last edit
pwr 2022-08-30
POST string
06/22/95-UMC-881/886A-2A4X5G0HC-00
Note
Core version
4.50PG
BIOS version
Last edit
pwr 2021-12-31
POST string
02/20/95-UMC-881/886A-2A4X5G03-00
Note
Core version
4.50G
BIOS version
Last edit
pwr 2023-05-16
drv No drivers available
doc 3 board documents available
Language
Release date
File
Last edit
Language
English
Release date
File
Last edit
pwr 2022-08-30
Language
English
Release date
File
Last edit
pwr 1970-01-01
Language
English
Release date
File
Last edit
pwr 2022-03-17
chipdoc 3 chip documents available
Chip
Language
Release date
File
Last edit
Chip
Language
English
Release date
File
Last edit
pwr 2023-06-02
Chip
Language
English
Release date
File
Last edit
pwr 2023-06-03
Chip
Language
English
Release date
File
Last edit
pwr 2023-10-14

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