Dell OptiPlex GX745 User'smanual page 114

Bus type
Bus speed
Cards:
PCI:
connectors
connector size
connector data width
(maximum)
PCI Express:
connectors
power
connector size
connector data width (maximum)
Drives
Externally accessible
Internally accessible
Connectors
External connectors:
Serial
Parallel
Video
Network adapter
Optional PS/2 with secondary serial port
adapter
USB
Audio
System board connectors:
SATA
internal USB
Floppy drive
Serial
Fan
PCI 2.2
Front panel
Key Combinations
<Ctrl><Alt><Del>
<F2> or <Ctrl><Alt><Enter>
<Ctrl><Alt><b>
<F12> or <Ctrl><Alt><F8>
PCI 2.3
PCI Express 1.0A
SATA 1.0A and 2.0
USB 2.0
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
full-height cards supported
two
120 pins
32 bits
one x1 and one x16
10 W (x1) and 75 W (x16) maximum
36 pins (x1) and 120 pins (x16)
one PCI Express lane (x1) and 16 PCI Express lanes
(x16)
one 3.5-inch drive
two 5.25-inch drive bays
two bays for 1-inch-high hard drives
9-pin connector; 16550C-compatible
25-hole connector (bidirectional)
15-hole VGA connector
RJ45 connector
two 6-pin mini-DINs
two front-panel and six back-panel USB 2.0–
compliant connectors
two connectors for line-in/ microphone and line-out;
two front-panel connectors for headphones and
microphone
four 7-pin connectors
10-pin header for optional Media Card Reader (3.5-
inch bay device)
34-pin connector
12-pin connector for optional second serial port card
5-pin connector
two 120-pin connectors
40-pin connector
If you are running Microsoft® Windows® XP, brings
up the Windows Security window. If in MS-DOS®
mode, restarts (reboots) the computer.
starts embedded system setup (during start-up only)
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)
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