Dell OPTIPLEX 740 - Page 130

NOTE: This option uses one of the PCI slots.
USB
two front-panel and five back-panel USB 2.0–
compliant connectors
Audio
two connectors for line-in and line-out; two front-
panel connectors for headphones and microphone
System board connectors:
SATA
four 7-pin connectors
Floppy drive
34-pin connector
Serial
24-pin connector for optional second serial port card
Fan
5-pin connector
PCI 2.3
two124-pin connectors
PCIe-x1
36-pin connector
PCIe-x16
164-pin connector
Internal USB
10-pin connector
Intrusion switch
3-pin connector
Speaker
5-pin connector
Memory modules
four 240-pin connector
Power 12V
4-pin connector
Power
24-pin connector
Battery
2-pin socket
Front panel
40-pin connector

Key Combinations
<Ctrl><Alt><Del>
in Microsoft®Windows®XP and Windows Vista®,
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)
<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
<Ctrl><n>
starts the RAID setup menu if RAID is turned on in the
system setup program
<Ctrl><Enter>
disables computer password at start-up (after correct
password is entered)

Controls and Lights
Power control
front of chassis - push button
Power light (within the power button)
green light — Blinking green indicates sleep mode;
solid green indicates 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
front panel - green
Link light (on front panel)
front panel - solid green light indicates network
connection
Link integrity light (on integrated network adapter)
rear panel - 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)
rear panel - yellow blinking light
Diagnostic lights
front panel - four lights on the front panel. See
Diagnostic Lights.
Standby power light
AUX_PWR on the system board

Power
DC power supply:
Wattage
305 W
Heat dissipation
1040.7 BTU/hr maximum
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