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PERC 3/QC BIOS

The BIOS resides on a 1 MB × 8 flash ROM for easy upgrade. The PERC 3/QC BIOS supports INT 13h calls to boot DOS without special software or device drivers. The PERC 3/QC BIOS provides an extensive setup utility that can be accessed by pressing <Ctrl> <M> at BIOS initialization. PERC 3 BIOS Configuration Utility is described in Chapter 11 "Troubleshooting."

Onboard Speaker

The PERC 3/QC controller has an onboard tone generator for audible warnings when system errors occur. Audible warnings can be generated through this speaker. The audible warnings are listed in Chapter 13.

Serial Port

PERC 3/QC includes a 9-pin RS232C-compatible serial port connector. This is for manufacturing use only.

SCSI Bus

PERC 3/QC has four Wide 160M SCSI channels that support both LVD and single-ended devices with active termination. Synchronous and asynchronous devices are supported. PERC 3/QC provides automatic termination disable by using cable detection. The SCSI channel supports up to 15 wide or seven non-wide SCSI devices at speeds up to 160 MB/s.

SCSI Connectors

PERC 3/QC has two types of SCSI connectors:

Two 68-pin high density internal connectors

Four 68-pin external ultra-high-density connectors

Only one connector type can be used for the SCSI channel at any one time.

SCSI Termination

PERC 3/QC uses active termination on the SCSI bus conforming to SCSI-2 and SCSI-3 specifications. Termination enable/disable is automatic through cable detection.

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PERC 3/QC Features

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Dell manual Perc 3/QC Bios