Dell PRECISION WORKSTATION 450 manual Expansion Bus, Drives, Connectors, Key Combinations

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)
IEEE 1394	Dell Precision 650 computer only — Two 6-pin serial
	connectors
Video	15-hole connector (on add-in video card)
Network connector	RJ45 connector
PS/2 (keyboard and mouse)	6-pin mini-DIN connector
USB	two USB 2.0-compliant connectors on the front panel;
	four USB 2.0-compliant connectors on the back panel
Audio	Dell Precision 650 computer— Three connectors for
	line-in, line-out, and microphone on back panel; one
	speaker/headphone and one microphone connector
	on the front panel
	Dell Precision 450 computer— Three connectors for
	line-in, line-out, and microphone on back panel; one
	speaker/headphone on the front panel
System Board Connectors:
Primary IDE channel	40-pin connector
Secondary IDE channel	40-pin connector
Floppy drive	34-pin connector
SCSI	68-pin connector (Dell Precision 650 computer only)
CD drive audio interface	4-pin connector
Telephony (TAPI)	4-pin connector
Fans (3)	3-pin connector
I/O panel	34-pin connector
USB/IEEE 1394	16-pin connector
Key Combinations
<F2>	starts embedded system setup (during start-up only)