Dell Precision 490 Desktop User Manual page 93

Expansion Bus
Bus type
Bus speed
Card Slots
PCI
connector
connector size
connector data width (maximum)
PCI-X
connectors
connector size
connector data width (maximum)
PCI Express x8 (wired as x4)
connectors
connector size
connector data width (maximum)
PCI Express x16
connector
connector size
connector data width (maximum)
Drives
Externally accessible:
Internally accessible:
Connectors
External connectors:
Serial
Parallel
IEEE 1394 (optional)
Network adapter
PS/2 (keyboard and mouse)
USB
Audio
System board connectors:
IDE drive
Floppy drive
Serial ATA
Internal USB
PCI 2.3
PCI Express 1.0A
PCI-X 2.0A
USB 2.0
PCI: 133 MB/s
PCI-X: 800 MB/s
PCI Express:
x4/ x8 slot bidirectional speed - 2 GB/s
x16 slot bidirectional speed - 8 GB/s
Desktop Mode: Slots 2-4 support full-length cards (1
PCI Express x16 slot, one PCI Express x8 slot, and
one PCI slot), and slots 1, 5, and 6 support half-
length cards (2 PCI-X slots and 1 PCI Express x8
slot).
Tower Mode: Slots 2-5 support full-length cards (1
PCI-X slot, one PCI Express x8 slot, 1 PCI Express
x16 slot, and one PCI slot), and slots 1 and 6 support
half-length cards (1 PCI-X slot and 1 PCI Express x8
slot).
one
120 pins
32 bits
two
188 pins
64 bits
two x8 (support x8, x4, and x1 modes/cards;
maximum x4 link width)
98 pins
4 PCI Express lanes
one x16 slot (supports x16, x8, x4 and x1
modes/cards)
164 pins
16 PCI Express lanes
one 3.5-inch drive bay (FlexBay)
two 5.25-inch drive bays
two 3.5-inch hard-drive bays
two 9-pin connectors; 16550C-compatible
25-hole connector (bidirectional)
one front-panel 6-pin connector (with optional card)
RJ45 connector
two 6-pin mini-DIN
two front-panel and five back-panel USB 2.0–
compliant connectors
two front-panel connectors for microphone and
headphones;
two back-panel connectors for line-in and line-out/
headphones
40-pin connector
34-pin connector
five 7-pin connectors
10-pin connector for optional Media Card Reader (3.5-
inch bay device)