8 Information About Your Computer
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Expansion Bus
Bus type Dual PCI-X 1.0 (3.3 V only), PCI 2.2
(3.3 V/5.0 V)
AGP Pro 3.0 (1.5 V only)
Bus speed PCI: 33 MHz; PCI-X: 66/100 MHz
AGP Pro: 66 MHz
Expansion-card connectors: Dell Precision 650 computer — Three
PCI-X connectors, two PCI slots, and
one AGP 8x Pro110 connector
Dell Precision 450 computer — One
PCI-X connector, two PCI slots, and one
AGP 8x Pro50 connector
Drives
Externally accessible:
Dell Precision 650 computer one 3.5-inch drive bay
three 5.25-inch drive bays
Dell Precision 450 computer one 3.5-inch drive bay
two 5.25-inch drive bays
Internally accessible:
Dell Precision 650 computer three bays for three 1-inch high or two
1.6-inch high hard drives
NOTE: You can purchase a conversion
bracket from Dell that allows you to use
a 5.25-inch drive bay as an additional
hard drive bay.
Dell Precision 450 computer two bays for two 1-inch high or one 1.6-
inch high hard drives
Connectors
External connectors:
Serial two 9-pin connectors; 16550-compatible
Parallel one 25-hole connector (bidirectional)
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