Dell 390 owner manual Drives, External Connectors

Cards

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

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