Specifications<= span style=3D'color:blue'>

Dell™ OptiPlex™ GX270 Systems User's Guide

Microprocessor
Microprocessor type	Intel® Pentium® 4 and Celeron®; design provides for future Dell-supported upgrades. A slower compatibility speed= can be set through system setup.
Level 1 (L1) data cache	8 KB
Level 2 (L2) cache	128-KB, 256-KB, 512-KB, or 1-MB (depending on your computer configuration) pipelined-burst, eight-way set associative, write-back SRAM

Memory<= /span>
Type	333- and 400-MHz DDR SDRAM
Memory connectors	small form-factor computer: 2 small desktop computer: 4 small mini-tower computer: 4
Memory capacities	128-MB, 256-MB, 512-MB, or 1-GB non-ECC
Minimum memory	128 MB
Maximum memory	small form-factor computer: 2 GB small desktop computer: 4 GB small mini-tower computer: 4 GB
BIOS address	F0000h

Computer Informati= on
Chip set	Intel 865G
Data bus width	64 bits
Address bus width	32 bits
Interrupt levels	24
BIOS chip	4-MB
NIC	Gigabit integrated network interface with ASF 1.0 su= pport as defined by DMTF Capable of 10/100/1000 communication<= /p> = Green — A good connection exists between a 10-Mbps network and the computer. = Orange = 212; A good connection exists between a 100-Mbps net= work and the computer. = Yellow — A good connection exists between = a 1 Gb (or 1000-Mbps) connection. Off — The computer is not detecting a physical connection to the network or the controller is disabled in System Setup.<= /a>
System clock	800-, 533-, or 400-MHz quad-data rate; 200-, 133-, or 100-MHz (matches external bus speed)

Video
Type	Integrated chipset video or expansion AGP card<= /o:p>

Audio
Type	AC97
Stereo conversion	16-bit analog-to-digital; 20-bit digital-to-analog

Controllers
Hard drive	dual-channel Serial ATA, supporting one device per c= hannel Ultra ATA/100 dual-channel bus master EIDE, supporting one or two devices= per channel, depending on your computer

Expansion Bus=
Bus type	PCI 2.2 AGP 3.0 USB 2.0
Bus speed	PCI: 33 MHz AGP: 66 MHz
Small form-factor computer	low-profile cards are supported (card size =3D6.35 c= m [2.5 inches] high by 16.76 cm [6.6 inches] long)
AGP
connector	one
connector size=	172 pins
connector data width (max= imum)	32 bits
bus protocols<= /p>	8x/4x modes at 1.5 V
PCI
connector	one
connector size=	120 pins
connector data width (max= imum)	32 bits
Small desktop computer	two half-length PCI cards (card size =3D 10.67 cm [4= .2 inches] high by 17.65 cm [6.95 inches] long) one low-profile AGP card (card size =3D 6.35 cm [2.5 inches] high by 16.7= 6 cm [6.6 inches] long)
AGP
connector	one
connector size=	172 pins
connector data width (max= imum)	32 bits
bus protocols<= /p>	8x/4x modes at 1.5 V
PCI
connectors	two
connector size=	120 pins
connector data width (max= imum)	32 bits
Small mini-tower computer	card sizes =3D three PCI slots support cards up to 2= 7.9 cm (11 inches) long, and one PCI slot and the AGP slot support cards up to 2= 2.9 cm (9 inches) long
AGP
connector	one
connector size=	172 pins
connector data width (max= imum)	32 bits
bus protocols<= /p>	8x/4x modes at 1.5 V
PCI
connectors	four
connector size=	120 pins
connector data width (max= imum)	32 bits

Drives<= /span>
Externally accessible:
Small form-factor computer	one bay for a slimline floppy drive one bay for a slimline CD/DVD drive
Small desktop computer<= /o:p>	one 3.5-inch bay one 5.25-inch bay
Small mini-tower computer	two 3.5-inch drive bays two 5.25-inch drive bays
Internally accessible:
Small form-factor computer	one bay for a 1-inch-high hard drive<= /p>
Small desktop computer<= /o:p>	one bay for a 1-inch-high hard drive<= /p>
Small mini-tower computer	two bays for 1-inch high hard drives<= /p>

Connectors
External connectors:
Serial	9-pin connector; 16550C-compatible
Parallel	25-hole connector (bidirectional)
Video	15-hole connector
Network adapter	RJ45 connector
PS/2 (keyboard and mouse)	6-pin mini-DIN
USB	two front-panel and six back-panel USB 2.0–com= pliant connectors
Audio	three connectors for line-in, line-out, and micropho= ne; one front-panel connector for headphones
System board connectors:
Primary IDE drive=	40-pin connector
Secondary IDE drive	40-pin connector
Serial ATA	7-pin connector
Secondary Serial ATA (not av= ailable on the small form-factor or small desktop computers)	7-pin connector
Floppy drive	34-pin connector
CD drive audio interface	4-pin connector
Serial	12-pin connector for optional 2nd serial port card
Fan	3-pin connector
PCI 2.2	120-pin connector
Front audio	10-pin connector
Front panel	34-pin connector

Key Combinations
<Ctrl><Alt><Del<= /st1:State>>	restarts the computer
<Ctrl><Alt><\>	toggles microprocessor speeds on 101-key keyboard (in MS-DOS® real mode only)
<Ctrl><Alt><#>	toggles microprocessor speeds on 102-key keyboard (in MS-DOS real mode only)
<F2> or <Ctrl><Alt><Enter>	starts embedded system setup (during start-up only)<= /a>
<F3>	automatically starts the computer from the network environment specified by the remote boot environment (PXE) rather than fr= om one of the devices in the system setup Boot Sequence option (during start= -up only)
<F12> or <Ctrl><Alt><F8>=	displays a one-time boot menu that lets the user ent= er a device for a single boot (during start-up only)
<Ctrl><Alt><F10>	launches the utility partition (if installed) during computer start-up
<Ctrl><Alt><D>	launches the hard-drive diagnostics utility during computer start-up

Controls and Light= s
Power control	push button
Power light	green light—blinking green in sleep state; sol= id 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 10= 0-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 power supply:
Wattage	small form-factor computer: 160 W small desktop computer: 210 W small mini-tower computer: 250 W
Heat dissipation<= /p>	small form-factor computer: 455 BTU/hr small desktop computer: 500 BTU/hr small mini-tower computer: 910 BTU/hr
Voltage	90 to 135 V at 50/60 Hz; 180 to 265 V at 50/60 Hz
Backup battery	3-V CR2032 lithium coin cell

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&de= g;F)
Relative humidity
Operating	20% to 80% (noncondensing= )
Storage	5% to 95% (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<= /p>
Maximum shock:
Operating	bottom 40-G half-sine pulse with a change in velocit= y of 20 inches/sec (50.8 cm/sec)
Storage	105-G pulse with a change in velocity of 50 inches/s= ec (127 cm/sec)
Altitude:
Operating	–15.2 to 3048 m (–50 to 10,000 ft)
Storage	–16 to 10,600 m (–50 to 35,000 ft)