Dell Precision 620 Manuel d'utilisateur télécharger pdf (Page 9)

Expansion Cards

The computer system accommodates up to six expansion cards (two 64-bit and four 32-bit PCI expansion cards), one 32-bit AGP Pro card, and

one 32-bit PCI/redundant array of independent disks (RAID) port. See Figure 2 for examples of the expansion cards.

Figure 2. Expansion Cards

Expansion Slots

The Dell Precision 620 system provides six PCI 2.2-compliant expansion slots on two peer buses. Four 32-bit slots (1, 2, 3, and 4) are on the

primaryPCIbus.OneortwooftheseslotsmaybeusedwiththeAGPProconnector.Slot4issharedwiththeRAIDportfunction.Two64-bit slots

(5 and 6) are on the secondary PCI bus.

You can install a properly keyed universal PCI expansion card in either the 32-bit (5-volt [V], 33-megahertz [MHz]) or 64-bit (3.3-V, 66- or 33-MHz)

PCI expansion slots. Either of the 64-bit expansion slots will accept a properly keyed 32-bit expansion card without affecting the other 64-bit

expansion slot; however, if you install a 33-MHz expansion card in either 64-bit expansion slot, the other 64-bit expansion slot operates at 33 MHz

also.

Installing an Expansion Card

1. Prepare the expansion card for installation, and remove the computer cover.

See the documentation that came with the expansion card for information on configuring the card, making internal connections, and

customizing it for your system.

ProcessormismatchLED

32-bit PCI expansion-card connectors (3)

Memory expansion card B connector

AGP Pro graphics card connector

System board thumbscrew

Network connector

Suspend to RAM LED

Diagnostic LEDs

Memory expansion-card A connector

USB connectors

LVDSCSIconnector

Microphone, audio-in,andaudio-out connectors

Standby power LED

Keyboard and mouse connectors

Memory expansion-card mismatch LED

System fan connector

Control panel connector

Serial port connectors 1 and 2

Remote wakeup LAN connector

Parallel port and SCSI port connectors

64-bit PCI expansion card

32-bit PCI expansion card

32-bit AGP expansion card

NOTE: There are no Industry-Standard Architecture (ISA) slots provided.

NOTE: If you install a PCI expansion card, your system automatically performs any required configuration tasks during the boot routine.

NOTICE: See "Protecting Against Electrostatic Discharge" in your Dell Precision WorkStations System Information Guide.

CAUTION: Some network cards automatically start up the system when they are connected. To guard against electrical

shock and to avoid damaging electrical components, perform the following steps before you install any expansion

cards:

a. Disconnect the external power cable at the back of the system.

b. Disconnect any network cables and phone lines.

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Dell Precision 620 Manuel d'utilisateur Page 9

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