ASUS PCI/E-P54NP4 Mainboard Specifications: - Operating System . Windows NT, OS/2 SMP, SCO UNIX SMP, Solaris V2.4, UnixWare V2.0 etc... for Dual Pentium Processor - Architecture . Dual Pentium Processor Architecture and 32-bit PCI Bus, 32-bit EISA Bus Compatible - Processor (Dual Intel Socket 5 ZIF Socket) . Intel Pentium Processor 90/100/120/133 MHz (P54C) . Intel Pentium Processor 90/100/120/133 MHz (P54C/CM) - Coprocessor Internal Coprocessor of P54C/P54CM Processor - Chipset Intel 82430N PCIset (Neptune) - Cache Memory . Write Back Cache . 256KB / 512KB for option - System Memory . Six 72-pin SIMM Sockets Support 2MB to 512MB . Use 1/2/4/8/16/32MB 72-pin DRAM Module with 70ns Fast Page Mode - Expansion Slots . 3 32-bit PCI slots . 1 PCI/EISA shared slot . 3 32-bit EISA slots - BIOS . Award P54C 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") ========================================================================== ASUS PCI/I-P54NP4 Mainboard Specifications: - Architecture . Dual Pentium Processor Architecture and 32-bit PCI Bus, 16-bit ISA Bus Compatible - Processor (Intel Socket5 ZIF Socket) . Intel Pentium Processor 90/100 MHz (P54C/CT) - Coprocessor Internal Coprocessor of P54C/P54CT Processor - Chipset Intel 82430N PCIset (Neptune) - Cache Memory . Write Back Cache . 256KB / 512KB for option - System Memory . Four 72-pin SIMM Sockets Support 2MB to 512MB . Use 1/2/4/8/16/32/64/128MB 72-pin DRAM Module with 70ns Fast Page Mode - Expansion Slots . 3 32-bit PCI slots . 1 PCI/EISA shared slot . 3 32-bit EISA slots . All PCI slots are DMA Master - BIOS . Award P54C 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") ========================================================================== ASUS PCI/I-P54NP4D Mainboard Specifications: - Operating System . Windows NT, OS/2 SMP, SCO UNIX SMP, Solaris V2.4, UnixWare V2.0 etc... for Dual Pentium Processor - Architecture . Dual Pentium Processor Architecture and 32-bit PCI Bus, 16-bit ISA Bus Compatible - Processor (Intel Socket 5 ZIF Socket) . Intel Pentium Processor 75/90/100/120/133 MHz (P54C) . Intel Pentium Processor 75/90/100/120/133 MHz (P54C/CM) - Coprocessor Internal Coprocessor of P54C/P54CM Processor - Chipset Intel 82430N PCIset (Neptune) - Cache Memory . Write Back Cache . 256KB / 512KB for option - System Memory . Four 72-pin SIMM Sockets Support 2MB to 512MB . Use 1/2/4/8/16/32/64/128MB 72-pin DRAM Module with 70ns Fast Page Mode - Expansion Slots . 3 32-bit PCI slots . 1 PCI/ISA shared slot . 3 16-bit ISA slots - BIOS . Award P54C 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") ========================================================================== ASUS PCI/I-P54SP4 Mainboard Specifications: - Processor (Intel Socket 5 ZIF Socket for CPU) . Intel Pentium Processor 75/90/100/120/133 MHz (P54C) - Coprocessor . Internal Coprocessor of Pentium Processor - Chipset . SIS 85C50X PCI Chipset - Architecture . 32-bit PCI Buss and 16-bit ISA Bus compatible - Cache Memory . 256KB/512KB/1MB for option. - System Memory . Four 72-pin SIMM Sockets Support 2MB 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) . 2 Serial Ports (16550 Fast UART Compatible) . 1 Parallel Port (ECP, EPP Port) - On Board PCI IDE . 2 x PCI Local Bus Enhanced-IDE ports (up to 4 IDE devices) . Support PIO Mode 3 - Expansion Slots . 3 32-bit PCI slots . 1 PCI/ISA shared slot . 3 16-bit ISA slots - BIOS . Award Pentium 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") ========================================================================== ASUS PCI/I-P54TP4 Mainboard Specifications: - Processor . Intel Socket 5 ZIF Socket for CPU . Intel Pentium Processor 75/90/100/120/133 MHz (P54C) - Coprocessor . Internal Coprocessor of Pentium Processor - Chipset . Intel Triton Chipset - Architecture . 32-bit PCI Bus and 16-bit ISA Bus compatible - Cache Memory . 256KB/512KB for option. . Support Burst Mode SRAM, Pipelined Burst SRAM or Asynchronous SRAM - System Memory . Four 72-pin SIMM Sockets Support 8MB to 128MB . Use 4/8/16/32MB 72-pin DRAM Module with 70ns Fast Page Mode or EDO DRAM - On Board Super I/O . 1 Floppy Port (2.88MB) . 2 Serial Ports (16550 Fast UART Compatible) . 1 Parallel Port (ECP, EPP Port) - On Board PCI IDE . 2 x PCI Bus Master IDE ports (up to 4 IDE devices) . Support PIO Mode 3, 4 and DMA Mode 2 - Expansion Slots . 3 32-bit PCI slots . 1 PCI/ISA shared slot . 3 16-bit ISA slots - BIOS . Award Pentium PCI BIOS with Green and Plug and Play Features . NCR PCI SCSI BIOS . 1M-bit Flash EPROM - Board Size . Baby AT Size, 33.3cm x 22.1cm (13.1" x 8.7") ========================================================================== ASUS PCI/I-P55TP4 Mainboard Specifications: - Processor . Intel Socket 5 or 7 ZIF Socket for CPU . Intel Pentium Processor 75/90/100/120/133 MHz (P54C) - Coprocessor . Internal Coprocessor of Pentium Processor - Chipset . Intel Triton Chipset - Architecture . 32-bit PCI Bus and 16-bit ISA Bus compatible - Cache Memory . 256KB/512KB Asynchronous SRAM - System Memory . Four 72-pin SIMM Sockets Support 8MB to 128MB . Use 4/8/16/32MB 72-pin DRAM Module with 70ns Fast Page Mode or EDO DRAM - On Board Super I/O . 1 Floppy Port (2.88MB) . 2 Serial Ports (16550 Fast UART Compatible) . 1 Parallel Port (ECP, EPP Port) - On Board PCI IDE . 2 x PCI Bus Master IDE ports (up to 4 IDE devices) . Support PIO Mode 3, 4 and DMA Mode 2 - Expansion Slots . 3 32-bit PCI slots . 1 32-bit PCI slots consists of ASUS proprietaty MediaBus . 3 16-bit ISA slots - BIOS . Award Pentium PCI BIOS with Green and Plug and Play Features . NCR PCI SCSI BIOS . 1M-bit Flash EPROM - Board Size . 2/3 Baby AT Size, 25.9cm x 22.1cm (10.2" x 8.7") ========================================================================== ASUS PCI/I-P55TP4XE Mainboard Specifications: - Processor . Intel Socket 5 or 7 ZIF Socket for CPU . Intel Pentium Processor 75/90/100/120/133/150 MHz (P54C/CS/CQS) - Coprocessor . Internal Coprocessor of Pentium Processor - Chipset . Intel Triton Chipset - Architecture . 32-bit PCI Bus and 16-bit ISA Bus compatible - Cache Memory . 256KB/512KB Pipelined Burst SRAM Module . 256KB/512KB Asynchronous SRAM for option - System Memory . Four 72-pin SIMM Sockets Support 8MB to 128MB . Use 4/8/16/32MB 72-pin DRAM Module with 70ns Fast Page Mode or EDO DRAM (60 ns DRAM required when using 66MHz external clock) - On Board Super I/O . 1 Floppy Port (up to 2.88MB) . 2 Serial Ports (16550 Fast UART Compatible) . 1 Parallel Port (ECP, EPP Port) . IrDA TX/RX Header - On Board PCI IDE . 2 x PCI Bus Master IDE ports (up to 4 IDE devices) . Support PIO Mode 3, 4 and DMA Mode 2 - Expansion Slots . 3 32-bit PCI slots . 1 ASUS MediaBus slot (1 x PCI slot plus ASUS proprietary slot) . 3 16-bit ISA slots - BIOS . Award Pentium PCI BIOS with Green and Plug and Play Features . NCR PCI SCSI BIOS . 1M-bit Flash EPROM - Board Size . 27.2cm x 22.2cm (10.7" x 8.7") ========================================================================== ASUS PCI/I-P5SP4 Mainboard Specifications: - Processor (Intel Socket 4 ZIF Socket) . Intel Pentium Processor 60/66 MHz - Coprocessor . Internal Coprocessor of Pentium Processor - Chipset . SIS 85C50X PCI Chipset - Architecture . 32-bit PCI Buss and 16-bit ISA Bus compatible - Cache Memory . 256KB/512KB/1MB for option. - System Memory . Four 72-pin SIMM Sockets Support 2MB 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) . 2 Serial Ports (16550 Fast UART Compatible) . 1 Parallel Port (ECP, EPP Port) - On Board PCI IDE . 2 x PCI Local Bus Enhanced-IDE ports (up to 4 IDE devices) . Support PIO Mode 3 - Expansion Slots . 3 32-bit PCI slots . 1 PCI/ISA shared slot . 3 16-bit ISA slots - BIOS . Award Pentium 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") ========================================================================== ASUS PCI/I-P55SP4 Mainboard Specifications: - Processor . ZIF 7 Socket for Pentium CPUs . Processor Speed 75/90/100/120/133/150/167 MHz (P54C/P54CS/P55C) - Coprocessor . Internal Coprocessor of Pentium Processor - Chipset . SiS 5511/5512/5513 Chipset - Architecture . 32-bit PCI Bus and 16-bit ISA Bus compatible - Cache Memory . Pipelined Burst SRAM Module 256KB / 512KB . Asynchronous SRAM 256KB / 512KB / 1MB for option - System Memory . 4 x 72-pin SIMM Sockets Support 2MB to 128MB Memory . Use 2/4/8/16/32MB 72-pin DRAM Module with 70ns Fast Page Mode or EDO DRAM (60 ns DRAM required when using 66MHz external clock) - On Board Super I/O . 1 Floppy Port (up to 2.88MB) . 2 Serial Ports (16550 Fast UART Compatible) . 1 Parallel Port (ECP, EPP Port) . IrDA TX/RX Header - On Board PCI IDE . 2 x PCI Bus Master IDE ports (up to 4 IDE devices) . Support PIO Mode 3, 4 and DMA Mode 2 - Expansion Slots . 3 32-bit PCI slots . 1 ASUS MediaBus slot (1 x PCI slot plus ASUS proprietary slot) . 3 16-bit ISA slots - BIOS . Award Pentium PCI BIOS with Green and Plug and Play Features . NCR PCI SCSI BIOS . 1M-bit Flash EPROM - Board Size . Baby AT Size PCB: 33.3cm x 22.2cm (13.1" x 8.7") * The specification is subject to change without notice. The brand and product name are trademark of their respective companies.