ASUS PCI/I-486SP3G Mainboard Specifications: - Processor (On Board Intel Socket 3, White Socket) . IntelDX4 - 100MHz (P24C, DC 3.45V) . Intel i486 DX2/DX/SX, 487SX and 486 OverDrive Processor (P23T) - Coprocessor Internal Coprocessor of Intel 486DX, 486DX2, 487SX and OverDrive Processor - Chipset Intel 82420 PCIset (SaturnII) - Cache Memory . 128KB/256KB/512KB for option - System Memory . Four 72-pin SIMM Sockets Support 1MB to 128MB . Use 1/2/4/8/16/32MB 72-pin DRAM Module with 70ns Fast Page Mode - On Board Super I/O . 1 Floppy Port (2.88MB) . 1 IDE Port . 2 Serial Ports (16550 Fast UART Compatible) . 1 Parallel Port (ECP, EPP Port) - On Board PCI SCSI . NCR 53C810 32-bit PCI SCSI Controller - Expansion Slots . 2 32-bit PCI slots . 1 PCI/ISA shared slot . 3 16-bit ISA slots - BIOS . Award 486 Green PCI BIOS and NCR PCI SCSI BIOS . 1M-bit Flash EPROM - Board Size . Baby AT Size, 33.3cm x 22.1cm (13.1" x 8.7")