Dell OptiPlex 745 - Manual (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