Dell OptiPlex 790 (Early 2011) User Manual
Page 89
External Connectors
Back Panel: 5
Video
15-pin VGA connector, 20-pin DisplayPort
connector
NOTE: Available video connectors may vary based on the graphics card
selected.
System Board Connectors
PCI 2.3 data width (maximum) — 32 bits
Mini-Tower, Desktop
one 120-pin connector
Small Form Factor, Ultra Small Form
Factor
none
PCI Express x1 data width (maximum) — one PCI Express lane
Mini-Tower, Desktop, Small Form
Factor
one 164-pin connector
Ultra Small Form Factor
none
PCI Express x16 (wired as x4) data width (maximum) — four PCI Express lanes
Mini-Tower, Desktop, Small Form
Factor
one 164-pin connector
Ultra Small Form Factor
none
PCI Express x16 data width (maximum) — 16 PCI Express lanes
Mini-Tower, Desktop, Small Form
Factor
one 164-pin connector
Ultra Small Form Factor
none
Serial ATA
Mini-Tower
four 7-pin connectors
Desktop, Small Form Factor
three 7-pin connectors
Ultra Small Form Factor
two 7-pin connectors
Memory
89