connector data width (maximum)
two 3.5-inch drive bays
two 5.25-inch drive bays
serial ATA drive, floppy drive, USB memory devices,
CD drive, CD-RW drive, DVD drive, DVD-RW drive, and
DVD and CD-RW combo drive
two bays for 1-inch high hard drives
9-pin connector; 16550C-compatible
25-hole connector (bidirectional)
PS/2 (keyboard and mouse)
two front-panel and sixback-panel USB 2.0–compliant
connectors
five connectors for line-in, line-out, microphone,
surround, and center/Low Frequency Effects (LFE)
channel; two front-panel connectors for headphones
and microphones
40-pin connector on PCI local bus
green light — Blinking green in sleep state; solid
green for power-on state
amber light — Blinking amber indicates a problem
with an installed device; solid amber indicates an
internal power problem (See "Power Lights.")
Link integrity light (on integrated network adapter)
green light — A good connection exists between a
10-Mbps network and the computer.
orange light — A good connection exists between a
100-Mbps network and the computer.
yellow light — A good connection exists between a 1-
GB (or 1000-Mbps) connection.
off (no light) — The computer is not detecting a
physical connection to the network.
Activity light (on integrated network adapter)
four lights on the back panel (See "Diagnostic
Lights.")
AUX_PWR on the system board
color options: off (no light), ruby, emerald, sapphire
(default), amber, amethyst, topaz, diamond.
