To find your BIOS upgrade you can do one of the following options:

1. Identify your Chaintech motherboard model via our Award BIOS or AMI BIOS id's tabs
2. Find a(n) Chaintech BIOS upgrade via the Links tab on the official site.
3. Run the BIOS Agent scan browser plugin

Award BIOS motherboard IDs (more info)

2A496C30-00	Chaintech 486ICP
2A4IBC31-01	Chaintech
2A4IBC31-B2	Chaintech
2A4IBC32-B2	Chaintech 486SPM
2A4IBC32-B3	Chaintech
2A4IBC32C-00	Chaintech 486SPM (PCB: M1.02)
2A4IBC3IC-00	Chaintech 486SPM
2A4X5C31-00	Chaintech
2A597C31-00	Chaintech
2A59CC31	Chaintech
2A59CC3A	Chaintech 586IEM
2A59CC3AC-00	Chaintech 586IEM, 586IEM0 or 586IEM0.1
2A59CC3B	Chaintech 5IEM
2A59CC3BC	Chaintech 5IEM
2A59CC39	Chaintech
2A59CC39C-01	Chaintech 5IDM2 (PCB: M105)
2A59FC39C-00	Chaintech 5IFM
2A59FC3AC-00	Chaintech 5HTM (PCB: M101)
2A59GC39	Chaintech
2A59GC39C	Chaintech 5VGM or 5IFM or 5IGM
03/27/97-i430vx-8680-2A59GC39C-00	Chaintech 5VLM0
2A5IAC31-00	Chaintech
2A5IAC36-00	Chaintech
2A5ICC39-01	Chaintech 5SBM2
2A5IDC3A	Chaintech 5SEM
2A5IDC3AC-00	Chaintech 586SEM
2A5IDC3CC-00	Chaintech
2A5IDC39	Chaintech
2A5IDC39C-00	Chaintech 5SEM (PCB: M102)
06/02/1998 MVP3-586-8661-2A5LEC39C-00	Chaintech 5AGM2
2A5X7C31-00	Chaintech 5UBM
2A69HC3DC-00	Chaintech 6FTM
xx/xx/xxxx-i440EX-8671-2A69JC39C-00	Chaintech 6ESA / 6ESA2
xx/xx/xxxx-i440EX-8661-2A69JC39C-00	Chaintech 6ESV
xx/xx/xxxx-i440LX-8673-2A69JC39C-00	Chaintech 6LIA
xx/xx/xxxx-i440LX-8679-2A69JC39C-00	Chaintech 6LTL
xx/xx/xxxx-i440LX-W977-2A69JC39C-00	Chaintech 6LTM
xx/xx/xxxx-i440LX-8671-2A69JC39C-00	Chaintech 6LTM2
xx/xx/xxxx-i440LX-W977-2A69JC39C-00	Chaintech 6LTS
05/05/1999-i440BX-W977EF-2A69KC39C-00	Chaintech 6BDA
06/23/1999-i440BX-W977TF-2A69KC39C-00	Chaintech 6BDU
12/20/1999-i440BX-8671-2A69KC39C-00	Chaintech 6BSA
10/17/1998-i440BX-ITE867-2A69KC39C-00	Chaintech 6BSV
07/14/1998-i440BX-ITE867-2A69KC39C-00	Chaintech 6BTA
12/17/1999-i440BX-ITE867-2A69KC39C-00	Chaintech 6BTA2
12/28/1999-i440BX-8671-2A69KC39C-00	Chaintech 6BTA3
05/05/2000-i440BX-W977TF-2A69KC39C-00	Chaintech 6BTM
01/12/2000-i440BX-ITE867-2A69KC39C-00	Chaintech 6BTML
07/23/1999-i440BX-W977TF-2A69KC39C-00	Chaintech 6BTS
04/13/1999-i440BX-ITE867-2A69KC39C-00	Chaintech 6BPV
04/26/1999-SiS-5600-8661-2A6ILC39C-00	Chaintech 6SSA2 (PCB: Rev C)
05/18/1999-693-596-8671-2A6LGC3AC-00	Chaintech 6VTA2
2C4I8C30	Chaintech 486SLB
2C4I9C31-00	Chaintech 4SLE
2C4X2C31-00	Chaintech
2C4X6C30-00	Chaintech
2C4X6C32-16	Chaintech
11/04/1999-i810-W83627HF-6A69MC3DC-00	Chaintech 6WSV2
07/24/2000-i810-W83627HF-6A69MC3DC-00	Chaintech 6WIV2
04/12/2000-8371-686A-TA6LKC0CC-00	Chaintech 7ATA
05/09/2000-8371-686A-TA6LKC0CC-00	Chaintech 7ATA

Award BIOS motherboard IDs with custom syntax

07/27/2005-K8T800-8237-SV7L0810C-00	Chaintech SK8T800-000LD or SK8T800-000LE

AMI BIOS motherboard IDs (more info)

30-0200-DF1128-00101111-070791-SISAUTO-F	Chaintech
40-0006-DE1128-00101111-121291-UMCAUTO-f	Chaintech
40-0400-ZZ1128-00101111-050591-ET/486H-F	Chaintech EBC433

• http://www.chaintech.com.tw/
• http://www.chaintech.dk/
• ftp://ftp.chaintech.com.tw/bios/