Dell OptiPlex 745c (Early 2007) User Manual
Page 78
USB 2.0
Bus speed
PCI: 133 MB/s
PCI Express x16: 8 GB/s bidirectional speed
PCI Express x1: 5 Gbps
SATA: 1.5 Gbps and 3.0 Gbps
USB: 480 Mbps
Cards:
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
power
10 W (x1) and 75 W (x16) maximum
connector size
36 pins (x1) and 120 pins (x16)
connector data width (maximum)
one PCI Express lane (x1) and 16 PCI Express lanes
(x16)
Drives
Externally accessible
one 3.5-inch drive
two 5.25-inch drive bays
Internally accessible
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 VGA connector
Network adapter
RJ45 connector
Optional PS/2 with secondary serial port
adapter
two 6-pin mini-DINs
USB
two front-panel and six back-panel USB 2.0–
compliant connectors
Audio
two connectors for line-in/ microphone 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
12-pin connector for optional second serial port card
Fan
5-pin connector
PCI 2.2
two 120
-pin connectors
Front panel
40-pin connector
Key Combinations
<Ctrl><Alt><Del>
If you are 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
<Ctrl-P>
displays the Management Engine BIOS Extension
settings screen that allows you to modify the settings