Dell Precision NT499 User Manual page 34

Connectors
System board connectors:
Serial ATA
serial connector
Floppy drive
Fan
PCI
PCI Express x8
PCI Express x16
FlexBay
uDOC
speaker
SAS activity LED
chassis intrusion switch
Video
Type
Supported Configurations:
375-W PSU
525-W PSU
34
About Your Computer
six 7-pin connectors
12-pin connector
34-pin connector
three 5-pin connectors
three 120-pin connectors
98-pin connector
two 164-pin connectors
2-port USB header
1-port USB header
4-pin connector
4-pin connector
3-pin connector
PCI Express x16
NOTICE:
Installing graphics cards that
exceed the specified wattage for your
power supply may result in your
computer not functioning properly. See
the documentation for your graphics
card for power requirements.
75-W PCI Express x16 (single or dual)
NOTE:
150-W PCI Express x16 graphics card
not supported.
75-W PCI Express x16 (single or dual);
150-W PCI Express x16 (single or dual);
225-W PCI Express x16 and 75-W PCI
Express x16