Dell OptiPlex 990 Mini-Tower - Page 90

Drives
Mini-Tower
two
Desktop
one
Small Form Factor
one slim optical drive bay
Ultra Small Form Factor
one slim optical drive bay
Internally Accessible:
3.5–inch SATA drive bays
Mini-Tower
two
Desktop
one
Small Form Factor
one
Ultra Small Form Factor
none
2.5–inch SATA drive bays
Mini-Tower
two
Desktop
one
Small Form Factor
one
Ultra Small Form Factor
one
External Connectors
Audio:
Back Panel two connectors for line-out and line-in/
microphone
Front Panel two connectors for microphone and
headphone
Network Adapter one RJ45 connector
Serial one 9-pin connector; 16550C compatible
Parallel one 25-pin connector (optional for mini-
tower)
USB 2.0
90