*NOTE* These specs are for the Dell™ Optiplex™ 745 Desktop in general. The system in this ad is configured according to the features listed in the "Description" of the ad. System Upgrades are available.
- Processors
Processor type: Intel® Pentium® 4, Pentium® D, Celeron®, or Core™ processor
Internal cache: At least 512 KB pipelined-burst, eight-way set associative, write-back SRAM
FSB: 800 MHz
- Drives
745 Desktop computer supports: (1) SATA (serial ATA) hard drive; (1) optional floppy drive or media card reader; and (1) optional SATA optical drive.
Externally accessible: one 3.5-inch drive one bay for optical drive or optional second hard drive
Internally accessible: one bay for a 1-inch-high hard drive
NOTE: Due to the limited number of drive bays and controllers on this computer, you will not be able to connect all supported devices at once.
NOTE: If you will be operating your computer without an optical drive or a 3.5-inch device (floppy drive or media card reader) installed, the appropriate drive-bay insert must be installed in place of the drive.
- Memory
Type: 533, 667, or 800 MHz DDR2 SDRAM
Memory connectors: 4
Memory modules supported: 256 MB, 512 MB, 1 GB, or 2 GB non-ECC
Minimum Memory: dual-channel: 512 MB; single-channel: 256 MB
Maximum Memory: At 533 or 667 MHz: 8 GB; At 800 MHz: 4 GB
BIOS address: F0000h
- Computer Information
Chipset: Intel® Q965 Express
Data bus width: 64 bits
Address bus width: 32 bits
DMA channels: eight
Interrupt levels: 24
BIOS chip (NVRAM): 8 Mb
NIC: integrated network interface with ASF 1.03 and 2.0 support as defined by DMTF. Capable of 10/100/1000 communication
- Video
Type: Intel® Graphics Media Accelerator 3000 or PCI Express x16 graphics card
- Audio
Type: ADI 1983 High Definition Audio
Stero conversion: 20-bit analog-to-digital; 20-bit digital-to-analog
- Controllers
Drives: two SATA controllers supporting one device each
- Expansion Bus
Bus type: PCI 2.3; PCI Express 1.0A; SATA 1.0A and 2.0; USB 2.0
Bus speed: PCI: 133 MB/s; PCI Express x16: 8 GB/s bidirectional speed; SATA: 1.5 Gbps and 3.0 Gbps; USB: 480 Mbps
Cards: half-length, full-height cards supported with optional riser-card cage
Default: no riser-card cage low-profile cards supported
PCI connectors: two
card size: low profile
connector size: 120 pins
connector data width (maximum): 32 bits
PCI Express connectors: one x16
card size: low profile
power: 25 W maximum
connector size: 120 pins (x16)
connector data width (maximum): 16 PCI Express lanes (x16)
Optional: full-height PCI Express riser-card cage low-profile and full-height cards supported
PCI connectors - 2
card size - one low-profile card and one full-height
card connector size - 120 pins
connector data width (maximum) - 32 bits
PCI Express connectors - one x16
card size - full-height
power - 25 W maximum
connector size - 120 pins (x16)
connector data width (maximum) - 16 PCI Express lanes (x16)
Optional: full-height PCI riser-card cage low-profile and full-height cards supported
PCI connectors - 3
card size - one low - profile card and two full-height cards
connector size - 120 pins
connector data width (maximum) - 32 bits
- Connectors
External connectors:
Serial - 9-pin connector; 16550C-compatible
Parallel - 25-hole connector (bidirectional)
Video - 15-hole VGA connector
Network adapter - RJ45 connector
Optional PS/2 with secondary serial port adapter - (2) 6-pin mini-DINs
USB- two front-panel and six back-panel USB 2.0 compliant connectors
Audio - (2) connectors for line-in/ microphone and line-out; (2) front-panel connectors for headphones and microphone
System board connectors:
SATA - (2) 7-pin connectors
Internal USB - 10-pin header for optional media card reader (3.5-inch bay device)
Floppy drive - 34-pin connector
Serial - 12-pin connector for optional second serial port card
Fan - 5-pin connector
PCI 2.3 - (2) 120-pin connectors
Front panel - 40-pin connector
- Key Combinations
Ctrl Alt Del: in Microsoft® Windows® XP, brings up the Windows Security window; in MS-DOS® mode, restarts (reboots) the computer
F2 or Ctrl Alt Enter: starts embedded system setup (during system start-up only)
Ctrl Alt b: automatically starts the computer from the network environment specified by the remote boot environment (PXE) rather than from one of the devices in the system setup Boot Sequence option (during start-up only)
F12 or Ctrl Alt F8: displays a boot device menu that allows the user to enter a device for a single boot (during system start-up only) as well as options to run hard-drive and system diagnostics
- Control and Lights
Power control: Push button
Power light: Green light: Blinking green indicates a sleep mode; solid green indicates the power-on state. Amber light: Blinking amber indicates a problem with an installed device; solid amber indicates an internal power problem (see Power Problems).
Hard-drive access light: green
Link light: solid green light indicates network connection
Link integrity light (on integrated network adapter): green light for 10-Mb operation; orange light for 100-Mb operation; yellow light for a 1000-Mb (1-Gb) operation
Activity light (on integrated network adapter): yellow blinking light
Diagnostic lights: four lights on the front panel. (See Diagnostic Lights)
Standby power light: AUX_PWR on the system board
- Power
DC external power supply: Power consumption can be zero when the computer is unplugged.
Wattage: 280 W</p>
Heat dissipation: 955 BTU/hr (NOTE: Heat dissipation is calculated based upon the power supply rating.)
Voltage: auto-sensing power supplies: 90 to 135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz
Backup battery: 3-V CR2032 lithium coin cell
- Physical
Height: 4.5 inches
Width: 15.7 inches
Depth: 13.9 inches
Weight: 23 lb
- Environmental
Temperature range: Operating 50° to 95°F; Storage: 40° to 149°F
Relative humidity: 20% to 80% (noncondensing)
Maximum vibration: Operating - 0.25 G at 3 to 200 Hz at 0.5 octave/min; Storage - 0.5 G at 3 to 200 Hz at 1 octave/min
Maximum shock: Operating - Bottom half-sine pulse with a change in velocity of 20 inches/sec; Storage - 27-G faired square wave with a velocity change of 200 inches/sec
Altitude: Operating: 50 to 10,000 ft; Storage: 50 to 35,000 ft
Fast computer, comes all setup! 
