*NOTE* These specs are for the Dell™ Optiplex™ 755 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 Core™ 2
Intel Pro™
Intel Celeron®
Internal cache:
L1: up to 128 KB
L2: up to 8 MB (depending on your processor)
- Memory
Type:
667 MHz DDR2 SDRAM
800 MHz DDR2 SDRAM
Memory connectors: 4
Memory modules supported:
512 MB
1 GB
2 GB non-ECC
Minimum Memory:
dual-channel: 1 GB
single-channel: 512 MB
Maximum Memory:
64-bit operating system: 8 GB
32-bit operating system: 4 GB
BIOS address: F0000h
- Computer Information
Chipset: Intel® Q35 Express Chipset w/ICH9DO
Data bus width: 64 bits
Address bus width: 32 bits
DMA channels: eight
Interrupt levels: 24
BIOS chip (NVRAM): 32 Mb
NIC: integrated network interface with ASF 1.03 and 2.0 support as defined by DMTF. Capable of 10/100/1000 communication. iAMT 3.0
- Video
Type:
Intel® Graphics Media Accelerator 3100 (integrated on system board)
PCI Express x16 slot can support either a PCI Express graphics card or a DVI graphics card (for dual-monitor support)
- Audio
Type: ADI 1984 High Definition Audio
Stero conversion: 24-bit analog-to-digital; 24-bit digital-to-analog
- Controllers
Drives:
(3) SATA controllers
(1) eSATA controller 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: standard configuration supports low-profile cards only; with optional riser-card cage, computer supports half-length, full-height cards. Full-height cards are supported in the 6.875-inch riser card cage.
PCI (without riser-card cage):
two connectors
card size low profile
120 pins connector size
32 bits connector data width (maximum)
PCI Express (without riser-card cage):
one x16 connector
low profile card size
25 W (maximum) power
164 pins (x16) connector size
16 PCI Express lanes (x16) connector data width (maximum)
PCI and PCI Express (with optional, full-height PCI Express riser-card cage, supporting both low-profile and full-height cards):
PCI
connectors two
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 164 pins (x16)
connector data width (maximum) 16 PCI Express lanes (x16)
PCI only (with optional, full-height PCI riser-card cage, supporting both low-profile and full-height cards):
connectors three PCI
card size one low-profile card and two full-height cards
connector size 120 pins
connector data width(maximum) 32 bits
- Drives
Externally accessible: one One eSATA drive (optional)
Internally accessible:
two SATA (Serial ATA) hard drives
one3.5-inch floppy drive or media card reader
one SATA optical drive
- 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- (2) front-panel and (6) 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 - (3) 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 (x16) 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)
F3: 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 system 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
Ctrl p: displays the Management Engine BIOS Extension settings screen that allows you to modify the settings
- Controls 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 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
Standby power light: AUX_PWR on the system board
- Power
DC power supply: (NOTE: Power consumption from an AC power source can be zero when the computer is unplugged from that power source, but the internal battery does draw a minute amount of power from the power supply even when the computer is not drawing power from the AC power source.)
Wattage: 280 W
Heat dissipation: 955 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: 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
Airborne contaminant level: G2 or lower as defined by ISA-S71.04-1985
