Dell Vostro 400 (Mid 2007) - Manual (Page 171)

Appendix
171
connector data width
(maximum) 16 PCI Express lanes
Drives
Externally accessible: one 3.5-inch drive bay (FlexBay)
two 5.25-inch drive bays
Internally accessible two 3.5-inch drive bays
Available devices two 3.5-inch Serial ATA hard drives and two 5.25-inch
Serial ATA CD-ROM, CD-RW, DVD-ROM,
DVD+/-RW, or combo drive (optional)
one 3.5-inch floppy drive (optional) or Media Card
Reader (optional)
Connectors
External connectors:
Video 15-hole connector
Network adapter RJ-45 connector
USB four front-panel and four back-panel USB 2.0-
compliant connectors
Audio six connectors for 7.1 support
System board connectors:
Serial ATA four 7-pin connectors
Internal USB device two 10-pin connector (supports four USB ports)
Floppy drive one 34-pin connector
Processor fan one 4-pin connector
Chassis fan one 3-pin connector
PCI 2.3 two 124-pin connectors
PCI Express x1 one 36-pin connector
PCI Express x16 one 164-pin connector
Front panel control one 10-pin connector
Expansion Bus (continued)