American seller
member for over 20 years

How can this be BETTER than NEW?
The original rechargeable barrel NiCd battery (prone to leak and cause damage) has been removed and the CMOS battery circuit upgraded to a modern CR2032 lithium battery — easy to replace, widely available and inexpensive. No more danger of leaking battery damage! The charging circuit has been disabled (CR2032 is non-rechargeable) and the reverse current protection diode has been upgraded to premium Schottky for longer battery life (only 0.08v drop). The board itself is in pristine condition with zero corrosion.

RARE Soyo 4SAW2 486 AT Motherboard
Supports AMD, Cyrix, and Intel up to 486DX4/100
ISA/VLB/PCI, I/O + ps/2 mouse port
SiS 85C496/497 chipset, 256K Cache
Updated to latest Award BIOS (WA53)
Multi-I/O — 1P/2S/FDD/IDE
All cables, including ps/2 mouse adapter included
Manufactured April 1996
SN. 9805

• We purchased Soyo motherboards directly from Soyo for our own production.
• This board was removed during a routine upgrade decades ago and has remained unused, packed in protected storage ever since.
• Sold without CPU and RAM so you can configure as you wish.
• Fully tested using Ultra-X professional diagnostics (see test results attached).
• NO CORROSION.
• Printed copy of original manual included.
• Addition manuals, jumper settings, info available here:
  
• PS/2 mouse adapter connects to header on motherboard.
• Universal floppy cable supports both 3.5" and 5-1/4" floppy drives.
  
• 30 day warranty.

You will receive exactly the item you see in the photos.

Shipped via fast USPS Priority Mail with full tracking. Shipped from a USPS SCF (Sectional Center Facility) so delivery anywhere within the U.S. is only a few days away (excluding the occasional USPS misdirect).

NOTES ON TESTING:
• All low-level core functions are tested with Ultra-X professional diagnostic software specifically designed to test these early motherboards.
• Tests included a burn-in loop of more than 10 minutes (see attached report for list of tests performed).
• Memory slots fully populated so all memory slots are tested.
• For practical reasons, I cannot test every slot, memory combination, processor, header, port, or configuration, etc.

RETURNS:
• Sold with 30 Day Warranty — If the board fails or a defect is found within 30 days of purchase, I will stand behind the product.
• Please contact me with details of any issue so we can resolve the problem or work out an appropriate solution.
• I will provide a reasonable amount of technical assistance if you have questions concerning the configuration or proper use of the item.
• Buyer's remorse returns must be in original condition, in original packaging, and may be subject to a deduction to cover the cost of retesting.
• Generally, the original shipping cost will not be refunded.