Gigabyte GA-586SG

Technical details
Name:	GA-586SG
Company:	Gigabyte
Chipset:	SIS 5591/ 5595, Winbond Super I/O
CPU socket:	ZIF-Socket 7
Memory:	2 banks a 2x PS/2 SIMM sockets, 2x SDRAM DIMM, max. 384 MB
Bus:	1x AGP 2x, 4x PCI, 2x ISA 16 bit
Connectors:	AT power, ATX power, Keyboard, PS/2 Mouse, front-module pins, 2x EIDE on PCI, floppy, 2x serial, parallel, USB
Form factor:	Baby-AT
Manufactured:	1998

Supported CPUs are P54C, P55C, 6x86, 6x86L, 6x86MX, K5, K6 with 60/66/75/83 MHz FSB. Multipliers are 1.5x - 5.5x and the board is dual Voltage capable between AUTO / 2.0 V - 3.5 V. The board has 512 kB pipelined burst cache and supports FPM, EDO, SDRAM up to 384 MB. The cacheable area is 256 MB. The EIDE ports support UDMA/33. The BIOS is from Award and a cell battery is used to buffer the CMOS. The mainboard manual is a bit inconsistent describing the maximum RAM possible. While stated on the introduction to have a maximum option of 768 MB it lists later as highest option 2x 128 MB SIMM (bank 0) + bank 1 empty + 64 MB in DIMM1 and 64 MB DIMM2 = 384 MB. Bank 1 SIMM and DIMM1 can not be populated at the same time.

Mainboard Manual

BIOS versions