3-6Service Guide• Hard Disk 32 Bit Access. This parameter allows your hard disk to use 32-bit access. Theavailable values are: Auto and Disabled. The default setting is Auto.Tip: We suggest you set all of these parameters to Autowhenever that choice is available. This allows the computer touse the hard drive at the highest possible performance level.3.3.4 Onboard Communication PortsThe Onboard Communication Ports section allows you to set addresses and interrupts for thecomputer’s serial and parallel ports.• Serial Port. The Serial Port parameter can be set to Enabled or Disabled. The Base Addressparameter accepts the following values: 3F8h, 2F8h, 3E8h or 2E8h. The IRQ parameteraccepts 4 or 3.The default values are Enabled, 3F8h and 4.• IrDA (FIR). The IrDA (FIR) parameter can be set to Enabled or Disabled. The Base Addressparameter accepts the following values: 3F8h, 2F8h, 3E8h or 2E8h. The IRQ parameteraccepts 4 or 3. The DMA Channel parameter accepts 3, 0 or 1.The default values are Enabled, 2F8h, 3 and 3.• Parallel Port. The Parallel Port parameter can be set to Enabled or Disabled. The BaseAddress parameter accepts 378h or 278h. The IRQ parameter accepts 7 or 5. The OperationMode parameter accepts the following values: EPP, ECP, Bi-directional or Standard. The ECPDMA Channel parameter lets you set the DMA channel used in ECP mode. You must chooseDMA channel 1 or 3 with this parameter if you select ECP as your parallel port operation mode.The default values are Enabled, 378h, 7 and EPP.Caution: In order to prevent resource conflicts, the BIOSUtility does not allow you to set the same IRQ and addressvalues for different devices.3.3.5 Onboard USBWhen enabled, you can connect USB devices to the onboard USB port on the rear of the computer.The default setting is Enabled.3.3.6 Reset PnP ResourcesThe system resources are already properly configured. If resource conflicts arise, you can set thisparameter to Yes to reset and reallocate PnP resources, after which the BIOS automatically resetsthis parameter to No, which is the default setting.
