Dell OptiPlex 780 - Manual (Page 8)

Internally accessible:
3.5-inch SATA drive bays Mini-Tower — two
Desktop and Small Form Factor — one
Available devices:
2.5-inch SATA hard drive
(with brackets) Mini-Tower, Desktop, and Small Form Factor — two
3.5-inch SATA hard drive Mini-Tower — two
Desktop and Small Form Factor — one
19-in-1 Media Card Reader Mini-Tower and Desktop — one
Small Form Factor — one (slimline drive)
5.25-inch SATA DVD-ROM,
DVD+/-RW, or DVD/CDRW
combo drive Mini-Tower — two
Desktop — one
Small Form Factor — one (slimline drive)
Control Lights and Diagnostic Lights
Power button light Green light — Solid green light indicates power-on state;
blinking green light indicates sleep state of the computer.
Amber light — Solid amber light when the computer does not
start indicates a problem with the system board or power supply.
Blinking amber light indicates a problem with the system board.
Drive activity light Green light — Blinking green light indicates that the computer
is reading data from or writing data to the hard drive.
Network connectivity light Green light — A good connection exists between the network
and the computer.
Off (no light) — The computer is not detecting a physical
connection to the network.
Diagnostic lights Four lights located on the front panel of the computer.
For more information on the diagnostic lights, see the
Service
Manual available on the Dell Support website at
support.dell.com/manuals.
Drives (continued)
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