USB : 8x USB 2.0 / 1.1 compatible 2 rear + 2 Type A connector + 2 headers (4 ports) Available Colors : Black Buttons : Power On/Off button System Reset button LEDs : Power LED Hard drive activity LED Network activity LED System Overheat LED Weight : 17.4 lbs (7.9 kg) Width : "7.25"" (184 mm)" Height : "14.25"" (362 mm)" CPU : Monitors for CPU Cores, +3.3V, +5V, +12V, +3.3V/+5V Standby, VBAT, Memory, Chipset CPU Core 3-Phase-switching voltage regulator with auto-sense from 0.8375V-1.6000V System Bus : 1066 / 800 / 533 MHz system bus Memory Capacity : Two 240-pin DIMM sockets Supports up to 2 GB of unbuffered, non-ECC DDR2 667/533/400MHz memory (Single / Dual Channel) Memory Type : DDR2 667/533/400MHz unbuffered, non-ECC SDRAM, 240-pin gold-plated DIMMs DIMM Sizes : 256 MB, 512 MB, 1 GB Memory Voltage : 1.8V only SATA : Intel ICH7R SATA 3.0Gbps Controller RAID 0, 1, 5, 10 support Network Controllers : 2x Realtek RTL8111C-GR Gigabit Ethernet Supports 10BASE-T, 100/1000BASE-TX, RJ45 output Super I/O : Winbond 83627DHG chip BIOS Type : 8Mb Flash EEPROM with AMI BIOS BIOS Features : Plug and Play (PnP) APM 1.2 DMI 2.3 PCI 2.2 ACPI 1.0 / 2.0 / 3.0 USB Keyboard support Hardware BIOS Virus protection SMBIOS 2.3 PCI-Express : 1 (x16) PCI-Express Slot 1 (x4) PCI-Express (in x8 slot) Clock Generator : CK505 Fans : 1x 9cm (rear) PWM fan w/ tool-less design 1x 8cm (front) cooling fan (optional) AC Voltage : 100 - 240V, 50-60Hz, 5 Amp +5V : 19 Amp +5V standby : 2.0 Amp +12V : 11 Amp + 11.5 Amp +3.3V : 16.0 Amp Certification : 80 PLUS Bronze Certified [ Test Report ] Form Factor : Mid-Tower Serial ATA : Four Serial ATA ports ( 3Gbps ) Four SATA hard drives supported LAN : 2x RJ45 LAN port Depth : "16.75"" (425 mm)" External : "2x 5.25"" external drive bays 1x 3.5"" external drive bay (OEM option)" -12V : 0.15 Amp VGA : Intel GMA950 Keyboard / Mouse : PS/2 keyboard and mouse ports Serial Ports : 1x Fast UART 16550 serial port 1x Serial Header FAN : Total of five 4-pin fan headers 5 x fans with tachometer monitoring Status monitor for speed control Status monitor for on / off control Support 3-pin PWM fans (with speed control) Low noise fan speed control Pulse Width Modulated (PWM) fan conn. Temperature : Monitoring for CPU and chassis environment CPU thermal trip support Thermal Control for 5 x Fan Connectors I2C temperature sensing logic Thermal Monitor 2 (TM2) Support PECI LED : CPU / System Overheat LED Suspend-state indicator LED +5V standby alert LED Other Features : Chassis intrusion Detection Chassis intrusion Header SDDC Support Model : CSE-731i-300B Graphics : Onboard GMA950 video Ports : 2x Front side USB ports (USB 2.0 ready) IDE : One EIDE channel supports up to two UDMA IDE devices Supports UDMA Mode 5, PIO Mode 4, and ATA/100 DC Output : 5V + 12V + 3.3V - 12V < 290W PCI : 2x 32-bit 33MHz PCI (5V) slots Internal : "4x 3.5"" tool-less HDD trays" Chipset : Intel 945GC