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Specifications

Dell™ OptiPlex™ GX280 Systems User's Guide

Memory
Type	400 & 533 MHz DDR2 SDRAM
Memory connectors	small form-factor computer: 2 small desktop computer: 4 desktop computer: 4 small mini-tower computer: 4 mini-tower computer: 4
Memory capacities	128 MB, 256 MB, 512 MB, or 1 GB non-ECC
Minimum memory	dual-channel: 256 MB single-channel: 128 MB
Maximum memory	small form-factor computer: 2 GB small desktop computer: 4 GB desktop computer: 4 GB small mini-tower computer: 4 GB mini-tower computer: 4 GB
BIOS address	F0000h

Computer Information
Chipset	Intel Grantsdale
Data bus width	64 bits
Address bus width	32 bits
DMA channels	eight
Interrupt levels	24
BIOS chip (NVRAM)	4-Mb
Memory speed	400 & 533 MHz
NIC	integrated network interface with ASF 1.03 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 Extreme Graphics or PCI Express x16 DVI video card

Audio
Type	AC97, Sound Blaster emulation
Stereo conversion	16-bit analog-to-digital; 20-bit digital-to-analog

Controllers

Drives

small form-factor: one serial ATA controller supporting one device and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel small desktop: one serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel desktop: two serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel. small mini-tower: two serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel mini-Tower: two serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel

Expansion Bus
Bus type	PCI 2.2 SATA 1.0a USB 2.0 PCI Express 1.0a
Bus speed	PCI: 33 MHz SATA: 1.5 Gbps USB: 480 Mbps PCI Express x1: 5 Gbps PCI Express x16: 80 Gbps
Small Form-Factor computer	low-profile cards supported
PCI
connector	one
connector size	120 pins
connector data width (maximum)	32 bits
PCI Express
connector	one x16
connector size	164 pins
connector data width (maximum)	16 PCI Express lanes
Small Desktop computer	half-length cards supported
PCI
connectors	one or two (depending on purchase)
connector size	120 pins
connector data width (maximum)	32 bits
PCI Express
connector	one x16 and an optional x1
connector size	120 pins (x16) and an optional 36 pins (x1)
connector data width (maximum)	16 PCI Express lanes (x16) and an optional one PCI Express lane (x1)
Desktop computer	half-height cards supported half-length, full-height cards supported with optional with card cage
PCI
connectors	two (without card cage) two (with card cage)
connector size	120 pins
connector data width (maximum)	32 bits
PCI Express
connectors	one x16
connector size	120 pins (x16)
connector data width	16 PCI Express lanes (x16)
Small Mini-Tower	full-height cards supported
PCI
connectors	three
connector size	120 pins
connector data width (maximum)	32 bits
PCI Express
connector	one x1 and one x16
connector size	36 pins (x1) and 120 pins (x16)
connector data width (maximum)	one PCI Express lane (x1) and 16 PCI Express lanes (x16)
Mini-Tower	full-height cards supported
PCI
connectors	two
connector size	120 pins
connector data width (maximum)	32 bits
PCI Express
connectors	one x1 and one x16
connector size	36 pins (x1) and 120 pins (x16)
connector date width (maximum)	one PCI Express lane (x1) and 16 PCI Express lanes (x16)

Drives
Externally accessible:
Small Form-Factor computer	one bay for a slimline floppy drive one bay for a slimline CD/DVD drive
Small Desktop computer	one 3.5-inch bay one 5.25-inch bay
Desktop computer	one 3.5-inch drive one bay for CD/DVD or optional second Hard Drive
Small Mini-Tower computer	two 3.5-inch drive bays two 5.25-inch drive bays
Mini-Tower computer	one 3.5-inch drive bay two 5.25-inch drive bays
Internally accessible:
Small Form-Factor computer	one bay for a 1-inch-high hard drive
Small Desktop computer	one bay for a 1-inch-high hard drive
Desktop computer	one bay for a 1-inch-high hard drive
Small Mini-Tower computer	two bays for 1-inch high hard drives
Mini-Tower computer	two bays for 1-inch high hard drives

Connectors
External connectors:
Serial	9-pin connector; 16550C-compatible
Parallel	25-hole connector (bidirectional)
Video	15-hole connector
Network adapter	RJ45 connector
Optional PS/2 with secondary serial port adapter	small form-factor computer: one 6-pin mini-DIN with a Y-adapter small desktop, small mini-tower, desktop, and mini-tower: two 6-pin mini-DINs
USB	two front-panel and six back-panel USB 2.0–compliant connectors
Audio	three connectors for line-in, line-out, and microphone; one front-panel connector for headphones
System board connectors:
Primary IDE drive	40-pin connector
Serial ATA	small form-factor computer: one 7-pin connector small desktop computer: one 7-pin connectors desktop computer: two 7-pin connectors small mini-tower: two 7-pin connectors mini-tower: two 7-pin connectors
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 audio	10-pin connector (For the optional audio customer kit)
Front panel	40-pin connector

Key Combinations
<Ctrl><Alt><Del>	If running Microsoft® Windows® XP, brings up the Windows Security window. If in MS-DOS® mode, restarts (reboots) the computer
<F2> or <Ctrl><Alt><Enter>	starts embedded system setup (during 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 start-up only) as well as options to run hard-drive and system diagnostics

Controls and Lights
Power control	push button
Power light	green light—blinking green in sleep state; solid green for 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 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	small form-factor, small desktop, and small mini-tower computers: four lights on the back panel desktop and mini-towercomputers: four lights on the front panel
Standby power light	AUX_PWR on the system board

Power
DC power supply:
Wattage	small form-factor computer: 160 W small desktop computer: 210 W desktop computer: 280 W small mini-tower computer with processor speeds of 3.2 GHz or lower: 250 W small mini-tower computer with processor speeds of 3.4 GHz or higher: 305 W mini-tower computer: 305 W
Heat dissipation	small form-factor computer: 546 BTU/hr small desktop computer: 717 BTU/hr desktop computer: 150W max small mini-tower computer with processor speeds of 3.2 GHz or lower: 853 BTU/hr small mini-tower computer with processor speeds of 3.4 GHz or higher: 1041 BTU/hr mini-tower computer: 150W max
Voltage	fixed-voltage power supply—110 V at 50/60 Hz manual selection and auto-sensing power supplies—90 to 135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz; 100 V at 50/60 Hz for Japanese computers
Backup battery	3-V CR2032 lithium coin cell

Physical
Small Form-Factor computer:
Height	9.0 cm (3.57 inches)
Width	31.9 cm (12.54 inches)
Depth	35.4 cm (13.93 inches)
Weight	6 kg (14 lbs)
Small Desktop computer:
Height	10.6 cm (4.2 inches)
Width	38.9 cm (15.3 inches)
Depth	43.2 cm (17 inches)
Weight	9.9 kg (22 lbs)
Desktop computer
Height	11.4 cm (4.5 inches)
Width	39.9 cm (15.7 inches)
Depth	35.3 cm (13.9) inches
Weight	10.4 kg (23 lbs)
Small Mini-Tower computer:
Height	42.5 cm (16.7 inches)
Width	18.1 cm (7.1 inches)
Depth	44.7 cm (17.6 inches)
Weight	12.7 kg (28 lbs)
Mini-Tower computer
Height	41.4 cm (16.3 inches)
Width	18.5 cm (7.3 inches)
Depth	43.9 cm (17.3 inches)
Weight	12.34 kg (27.2 lbs)

Environmental
Temperature:
Operating	10° to 35°C (50° to 95°F) NOTE: At 35°C (95°F), the maximum operating altitude is 914 m (3000 ft).
Storage	–40° to 65°C (–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 (50.8 cm/sec)
Storage	27-G faired square wave with a velocity change of 200 inches/sec (508 cm/sec)
Altitude:
Operating	–15.2 to 3048 m (–50 to 10,000 ft)
Storage	–15.2 to 10,668 m (–50 to 35,000 ft)

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