Asus P55SP4 - Manual (Page 51)

P/I-P55SP4 User’s Manual
UART2 Use Infrared
The default setting for the "UART2 Use Infrared " is "Disabled",
The default setting leaves the second serial port UART set to support
the Serial Port 2 connector. The "Enabled" setting activates the
onboard infrared IrDA feature and sets the second serial UART to
support the JP31 infrared module connector on the mainboard in­
stead. Choose this if you want to connect an infrared control mod­
ule to the mainboard. If your system already has a second serial port
connected to the onboard COM2 connector, it will no longer work if
you enable the infrared feature.
Internal PCI/IDE, IDE PIO & Prefetching Settings
The default setting for the "Internal PCI/IDE" is "Ensabled". This
activates both onboard IDE channels and connectors. The "Disabled"
setting disables the onboard controller and removes the PIO lines that
follow it. The PIO mode settings are best left set on "Auto", which
will auto-select the PIO mode for each device. The BIOS will select
the best IDE timing for the drive.-If the timing selected is too fast for
the drive and it doesn't operate properly, you can manually select
from Modes 0 to 4 to find the best timing. Mode 0 is the slowest and
Mode 4 is the fastest timing.
When you're finished making settings for this screen, press the
key to go back to the main screen.
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