Mainboard AK31

Mainboard AK31	Version 1	Version 2	Version 3
Version imprint onboard	1.3 or 1.4	2.0	3.1
BOM/LOT-Nr. (white sticker on outermost PCI-slot or on parallelport)	from 11	from 21	from 31
Description	with ECC-Funktion	without ECC, that makes it faster	new chipset-version, even faster
Northbridge	KT266 VIA VT8366		KT266A VIA VT8366A
Southbridge	VIA VT8233
Processor-Support
Athlon XP T-Bred	No	No	No
Athlon XP Palomino	No	up to 2100+ from BOM 26	up to 2100+ from BOM 36
Athlon FSB266	1000...1400MHz	1000...1400MHz	1000...1400MHz
Athlon FSB200	650...1300MHz	650...1400MHz	650...1400MHz
Duron FSB200 Morgan	No	from 900MHz	from 900MHz
Duron FSB200 Spitfire	550 ... 950 MHz	550 ... 950 MHz	550 ... 950 MHz

On the left: Palomino (Model 6), on the right: Thoroughbred (T-Bred, Model 8)

Windows XP Audio-Driver
If sound is troubled while playing MP3s or DVDs under Windows XP, it is caused by an old driver version located on the CD. This problem does not occur anymore with the latest driver version (see download).

Mainboard-Version

	The version's name is imprinted onboard.  (AK31 Version 3.1 has no changed sticker, but it has been pasted over)
	AK31 Version 3.1 with KT266A chipset can be recognized that its BOM resp. LOT- number is  "31" or higher. This number is located e.g. on the parallelport or on the box.

• Chipset
  up to AK31 v2.0: VIA Apollo KT266 Chipsatz
  from AK31 v3.1: VIA Apollo KT266A Chipsatz
  Northbridge: VIA VT8366 resp. VT8366A
  Southbridge: VIA VT8233
• Socket A CPU support
  supports 462Pin socket A processors (see table of compatibility above)
  with four mounting holes for special cooling systems
  automatic adjustment of speed and voltage 
  manual adjustment of FSB-frequency from 100...166MHz in 1MHz-steps
  VCore-voltage fine adjustment: decrease or increase up to 275mV
• Expansion Slots
  1 x A.G.P. (4X mode), 3,3V
  6 x 32 Bit PCI
  1 x CNR (Communication/Network Riser)
• Onboard IDE Controller
  2-channel enhanced PCI IDE
  for up to 4 IDE devices
  supports up to UltraDMA/100 (downward compatible)
  with ATA-100-cable
• Hardware monitoring
  CPU-temperature, system voltage and fan revolution can be monitored
• More interfaces
  Backpanel:
  1 x PS/2-Mouse
  1 x PS/2-Keyboard
  1 x Parallel (SSP/EPP/ECP)
  2 x Serial (16550 compatible, Fifo)
  2 x USB (four more connectors onboard)
  1 x Line-in
  1 x Line-out
  1 x Microphone
  1 x MIDI/Joystick-connector
  Onboard:
  1 x Floppy drive
  1 x Infrared (IrDA-Adapter not included in delivery)
  1 x WOL (Wake on Lan)
  4 x USB (two more connectors on the back panel)
  4 x Fan (CPU, AGP-Card, Northbridge-Chip, Case)
  3 x Audio (CD-Audio-in, TAD, AUX)
• Memory
  4 x 184-Pin DIMM-socket
  up to 4 GB DDR SDRAM capacity, memory-module PC1600/PC2100
  with 64, 128, 256, 512 or 1024 MB size
• Soundfunction
  Software-Audio with AC'97 2.1 conforming CODEC onboard
• Power Management
  Power saving modes: Doze, Standby and Suspend
  ACPI (Advanced Configuration and Power Interface)
  supports Suspend to RAM and Suspend to Disk
  power on via modem, timer, network (WOL), PCI-card
  On/Off-buttons with two functions: Suspend-mode / soft-off
  State after Power Failure: Auto/Off
• BIOS
  2 MBit Flash EPROM
  Award BIOS V6.0PG
  supports Green PC, Desktop Management Interface (DMI)
• Form Factor
  ATX: 24,5 x 30,5 cm