*NOTE* These specs are for the Dell™ Optiplex™ GX520 SFF in general. The system in this ad is configured according to the features listed in the "Description" of the ad. System Upgrades are available.
- Microprocessor
Microprocessor type: Intel® Pentium® or Celeron® processor
Level 1 (L1) cache: 32 KB
Level 2 (L2) cache: 512-KB, 1-MB, or 2-MB pipelined-burst, eight-way set associative, write-back SRAM
- Memory
Type: 400-MHz and 533-MHz DDR2 SDRAM
Memory connectors:2
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: 4 GB
BIOS address: F0000h
- Computer Information
Chipset: Intel® 945 Express
Data bus width: 64 bits
Address bus width: 32 bits
DMA channels: eight
Interrupt levels: 24
BIOS chip (NVRAM): 4 Mb
Memory speed: 400 MHz and 533 MHz
NIC: integrated network interface with ASF 1.03 and 2.0 support as defined by DMTF. Capable of 10/100/1000 communication:
Green: A good connection exists between a 10-Mbps network and the computer.
Orange: A good connection exists between a 100-Mbps network and the computer.
Yellow: A good connection exists between a 1-Gb (or 1000-Mbps) network and the computer.
Off : The computer is not detecting a physical connection to the network.
- Video
Type: integrated Intel Graphic Media Accelerator 950
- Audio
Type: AC97, Sound Blaster emulation
Stero conversion: 16-bit analog-to-digital; 20-bit digital-to-analog
- Controllers
Drives:
one serial ATA controller supporting one device
one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel
- Expansion Bus
Bus type:
PCI 2.2
SATA 1.0a and 2.0
USB 2.0
Bus speed:
PCI: 33 MHz
SATA: 1.5 and 3.0 Gbps
USB: 480 Mbps
Cards: (low-profile cards supported)
PCI:
connector: one
connector size: 120 pins
connector data width (maximum): 32 bits
PCI Express:
connector: one
connector size: 120 pins
connector data width (maximum): 32 bits
- Drives
Externally accessible:
one bay for a slimline floppy drive;
one bay for a slimline CD/DVD drive
Internally accessible: one bay for a 1-inch-high hard drive
- Connectors
External connectors:
Serial: 9-pin connector; 16550C-compatible
Parallel: 25-hole connector (bidirectional)
Video: 15-hole VGA connector
Network adapter: RJ45 connector
USB:
(2) front-panel
(6) back-panel USB 2.0 compliant connectors
Audio:
(3) connectors for line-in, line-out, and microphone
(1) front-panel connector for headphones
System board connectors:
Primary IDE drive: 40-pin connector
Serial ATA: 7-pin connector
Floppy drive: 34-pin connector
Serial: 12-pin connector for optional second serial port card
Fan: 5-pin connector
PCI 2.2: 120-pin connector
CD drive audio interface: 4-pin connector
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.
Hard-drive access light: green
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 back panel.
Standby power light: AUX_PWR on the system board
- Power
DC external power supply:
Wattage: 220 W/p>
Heat dissipation: 751 BTU/hr (NOTE: Heat dissipation is calculated based upon the power supply rating.)
Voltage: manual selection 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: 12.35 inches
Width: 3.65 inches
Depth: 13.40 inches
Weight: 16.4 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
Great computer for the price! 
