Dell OptiPlex 390 Small Form Factor Owner's Manual page 85

up to one low-profile cards
up to one full-height cards
up to one low-profile cards
up to one low-profile cards
one slim optical drive bay
three connectors once each for
line-out, line-in, and microphone
two connectors for line-out and
line-in/microphone
two connectors for microphone
one RJ45 connector
85
two
one
two
one
one
and headphone
Front Panel: 2
Small Form Factor
Small Form Factor
( Externally Accessible (5.25–inch drive bays
Mini-Tower
Desktop
Small Form Factor
inch SATA drive bays
Mini-Tower
Desktop
Small Form Factor
Mini-Tower/Desktop
Small Form Factor
Cards
PCI-Express x16
Mini-Tower
Desktop
Drives
: Internally Accessible
– 3.5
External Connectors
: Audio
Back Panel
Front Panel
Network Adapter
USB 2.0