Dell OptiPlex 990 (Early 2011) - Manual (Page 63)

System Configuration
Serial Port Allows you to define the serial port settings. You can set the
serial port to:
• Disabled
• Auto
• COM1
• COM2
• COM3
• COM4
NOTE: The operating system may allocate resources even
though the setting is disabled.
SATA Operation Allows you to configure the operating mode of the integrated
hard drive controller.
• AHCI = SATA is configured for AHCI mode
• ATA = SATA is configured for ATA mode
• RAID ON = SATA is configured to support RAID mode
• Disabled = The SATA controller is hidden
Drives Allows you to enable or disable the various on-board drives:
• SATA-0
• SATA-1
• SATA-2
• SATA-3
Smart Reporting This field controls whether hard drive errors for integrated
drives are reported during system startup. This technology is
part of the SMART (Self Monitoring Analysis and Reporting
Technology) specification. This option is disabled by default.
USB Configuration This field configures the integrated USB controller. If Boot
Support is enabled, the system is allowed to boot any type of
USB Mass Storage Devices (HDD, memory key, floppy). USB-
aware OS always see USB Mass Storage devices irrespective
of this setting, provided the port is enabled.
If USB port is enabled, device attached to this port is enabled
and available for OS.
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