Dell OptiPlex 170L - Manual (Page 137)

Bus speed 33 MHz
Small desktop computer one low-profile card (card size = 6.35 cm [2.5 inches]
high by 16.76 cm [6.6 inches] long) connector on the
system board
optional: two full-height PCI card (card size = 10.67
cm [4.2 inches] high by 17.65 cm [6.95 inches] long)
connectors on the riser card
PCI connectors up to 3, depending on computer configuration (one
on the system board and 2 on the optional card
cage)
connector size 120 pins
connector data width (maximum) 32 bits
Mini-tower computer
PCI connectors 3
connector size 120 pins
connector data width (maximum) 32 bits
Drives
Internally accessible drives
Small desktop computer one bay for a 1-inch-high hard drive (IDE or SATA)
Mini-tower computer two bays for 1-inch-high IDE hard drives or one IDE
hard drive and one SATA hard drive.
Externally accessible drives
Small desktop computer one 3.5-inch bay
one 5.25-inch bay
Mini-tower computer one 3.5-inch bay
two 5.25-inch bays
Connectors
External connectors:
Serial 9-pin connector; 16550C-compatible
Parallel 25-hole connector (bidirectional)
Video 15-hole connector
Network adapter RJ45 connector
PS/2 (keyboard and mouse) 6-pin mini-DIN
USB two front-panel and four back-panel USB 2.0–
compliant connectors
Audio three back panel connectors for line-in, line-out, and
microphone; one front-panel connector for
headphones
System board connectors:
Primary IDE drive 40-pin connector on PCI local bus
Secondary IDE drive (only on the mini-tower
computer)
40-pin connector on PCI local bus
Serial ATA one 7-pin serial ATA connector
Floppy drive 34-pin connector
Fan 3-pin connector
Key Combinations
or 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)
or displays a one-time boot menu that lets the user
enter a device for a single boot (during start-up only)
launches the utility partition (if installed) during
computer start-up
launches the hard-drive diagnostics utility during
computer start-up
disables computer password at start-up (after