Dell OptiPlex GX745 - Page 144

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:
low-profile cards supported
PCI:
connector
one
connector size
120 pins
connector data width (maximum)
32 bits
PCI Express:
connector
one x16
power
25 W (maximum)
connector size
164 pins
connector data width (maximum)
16 PCI Express lanes

Drives
Externally accessible
one bay for a slimline floppy drive;
one bay for a slimline optical drive
Internally accessible
one bay for a 1-inch-high hard drive

Connectors
External connectors:
Serial
9-pin connector; 16550C-compatible
Parallel
25-hole connector (bidirectional)
Video
15-hole VGA connector
Network adapter
RJ45 connector
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:
Primary IDE drive
40-pin connector
internal USB
10-pin header for optional Media Card Reader (3.5-
inch bay device)
SATA
two 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
120-pin connector
Front panel
40-pin connector

Key Combinations
<Ctrl><Alt><Del>
If you are running 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)
<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 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

Controls and Lights