Dell OptiPlex 390 User Manual

To avoid damaging your computer, perform the following steps before you begin
working inside the computer.
1. Ensure that your work surface is flat and clean to prevent the computer
cover from being scratched.
2. Turn off your computer (see Turning Off Your Computer).
CAUTION: To disconnect a network cable, first unplug the cable from your
computer and then unplug the cable from the network device.
3. Disconnect all network cables from the computer.
4. Disconnect your computer and all attached devices from their electrical
outlets.
5. Press and hold the power button while the computer is unplugged to
ground the system board.
6. Remove the cover.
CAUTION: Before touching anything inside your computer, ground yourself by
touching an unpainted metal surface, such as the metal at the back of the
computer. While you work, periodically touch an unpainted metal surface to
dissipate static electricity, which could harm internal components.
Recommended Tools
The procedures in this document may require the following tools:
• Small flat-blade screwdriver
• Phillips screwdriver
• Small plastic scribe
• Flash BIOS update program media
Turning Off Your Computer
CAUTION: To avoid losing data, save and close all open files and exit all open
programs before you turn off your computer.
1. Shut down the operating system:
• In Windows 7:
Click Start , then click Shut Down.
• In Windows Vista:
8

Dell OptiPlex 390 Specifications

General

Tcase	72.6 °C
Bus type	DMI
Processor cache	6 MB
Processor cores	4
Processor model	i5-2400
System bus rate	5 GT/s
Processor family	Intel® Core™ i5
Processor series	Intel Core i5-2400 Desktop Series
Processor socket	LGA 1155 (Socket H2)
Processor codename	Sandy Bridge
Processor frequency	3.1 GHz
Processor cache type	Smart Cache
Processor lithography	32 nm
Processor manufacturer	Intel
Processor front side bus	- MHz
PCI Express slots version	2.0
Processor boost frequency	3.4 GHz
Processor operating modes	64-bit
ECC supported by processor	No
Thermal Design Power (TDP)	95 W
Number of processors installed	1
CPU multiplier (bus/core ratio)	31
Maximum number of PCI Express lanes	16
Memory types supported by processor	DDR3-SDRAM
Memory clock speeds supported by processor	1066, 1333 MHz
Memory bandwidth supported by processor (max)	21 GB/s
Maximum internal memory supported by processor	32 GB
Product type	PC
Motherboard chipset	Intel® H61
Internal memory	4 GB
Memory channels	Dual-channel
Memory clock speed	1333 MHz
Memory layout (slots x size)	1 x 4 GB
HDD speed	7200 RPM
HDD interface	SATA III
Optical drive type	DVD-RW
Card reader integrated	-
Total storage capacity	500 GB
On-board graphics card	Yes
On-board graphics card ID	0x102
Discrete graphics card model	Not available
On-board graphics card model	Intel® HD Graphics 2000
On-board graphics card family	Intel® HD Graphics
On-board graphics card base frequency	850 MHz
On-board graphics card dynamic frequency (max)	1100 MHz
Number of displays supported (on-board graphics)	2
Operating system installed	Windows 7 Professional
USB 2.0 ports quantity	10
Firewire (IEEE 1394) ports	0
Chassis type	SFF
Product color	Black
Sustainability certificates	RoHS, ENERGY STAR
Power supply	240 W
Processor ARK ID	52207
Processor package size	37.5 x 37.5 mm
Supported instruction sets	AVX
Intel Identity Protection Technology version	1.00

Weight and Dimensions

Depth	312 mm
Width	93 mm
Height	290 mm
Weight	5700 g