Vintage Soyo 5BT5 430TX AT Motherboard ISA/PCI, P/S=AT/ATX, SIMM/DIMM

Description: American seller and eBay member for over 20 years. Rare Soyo 5BT5 Baby-AT c.1997 Socket-7 ISA/PCI, 512K WB cache, Intel-TX chipset and multi-I/O. Transitional motherboard: • Accepts either AT or ATX power supply. • Accepts either 72-pin SIMM or 168-pin DIMM memory. • Motherboard connection for 3-pin CPU fan. Includes updated printed manual. Professionally tested — 30 day warranty against defects. sn. 489834 We purchased Soyo motherboards directly from Soyo for our own PC production during this period. Removed during a routine upgrade decades ago and has remained unused, packed in protected storage ever since. Fully tested using professional software and equipment specifically designed to test motherboards of this era. Tested with Pentium 200MHz. Tested with maximum 256MB RAM (2x 128MB DIMM, also works with 1x 256MB DIMM). Updated to latest release of Award BIOS v4.51PG revision BT-1B7 dated 2/4/1999. Handles Y2K/millennium dates correctly. Intel 430TX chipset. New CR2032 lithium cell installed. Four 32-bit bus-master PCI slots, plus three 16-bit ISA slots (AT bus compatible) give you the best of both worlds. Supports Intel, AMD K5/K6 and Cyrix 6x86MX processors conforming to the below specifications: Voltage — 3.3, 3.52v single, 2.8, 2.9, 3.2v dual. FSB frequencies — 55, 60, 66, and 75MHz. Ratios — 1.5, 2.0, 2.5, 3.0, 3.5, 4.0x. Supports up to total 256MB of 72-pin EDO SIMMs and 168-pin 3.3v unbuffered DIMMs of at least 80ns access time. SIMM and DIMM can be mixed, but only two banks total. Note: Guide tabs for one DIMM socket are broken (the slot and lock tabs are fine). These tabs only serve to help guide the DIMM into the slot, otherwise serve no purpose. They do not support the DIMM, nor even touch the DIMM once inserted. These typically get broken when someone with big thumbs fails to align the DIMM notches (or puts it in backwards) and then pushes down too hard trying to seat it, causing the DIMM to flop sideways and break off the guide tabs. Just be careful to align the SIMM correctly in the socket and press down firmly straight down to seat it in its slot. Be careful not to let the DIMM flop to either side. Once seated, the lock tabs on the sides will secure it in the socket. This DIMM socket was included in the testing — zero problems. 512K write-back SDRAM cache. LPT parallel printer port, 2 serial ports, PS/2 mouse headers (cables not included). More details available here: https://theretroweb.com/motherboards/s/soyo-sy-5bt5-ver.-1.1 A very clean and functional vintage motherboard great for anyone wanting to play around with vintage technologies or play retro DOS games. You will receive exactly the item you see in the photos. Shipped via USPS 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). EXTRA VALUE — This item was not "found in back of closet," "from estate," "untested," etc., but of known original provenance and history, selected, inspected and professionally tested just prior to listing. 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 and we will resolve the problem or work out an appropriate solution. • Please contact me if you encounter any issues or have questions.

Price: 69.97 USD

Location: Columbia, South Carolina

End Time: 2024-11-14T19:16:46.000Z

Shipping Cost: 0 USD