Yamaha PF-500 Owner's Manual page 58

Connections
About the USB connector
• In order to use MIDI on your computer, you will need application software that is appropriate for your
computer and that meets your needs.
• If you want to use a USB cable to connect the PF-500 to your computer, you must connect the USB
cable before turning on the power of the PF-500.
Also, do not turn the power of the PF-500 on or off while application software that uses USB MIDI is
running.
• The PF-500 will begin transmission a short time after the USB connection is made.
• If you are using Windows 2000, problems may occur on your computer when your computer starts up.
In this case, turn on the power of the PF-500 when your computer is running.
• When using a USB cable to connect the PF-500 to your computer, make the connection directly without
passing through a USB hub.
• Depending on the state of your computer, the operating state of the PF-500 may become unstable. Do
not use your computer in a way that causes it to enter an unstable state.
CAUTION
• If you turn the power of the PF-500 on/off or connect/disconnect the USB cable in the following states,
problems will occur in the computer system, possibly causing it to "freeze" (hang up), or causing the
PF-500 to stop functioning.
- While installing the driver
- While starting-up or shutting-down the operating system
- While your computer is suspended (sleeping)
- While a MIDI application is running
• Performing the following actions may cause your computer to hang up or the PF-500 to stop function-
ing.
- Rapidly turning the power on/off or connecting/disconnecting the cable
- Shifting to power-conservation (sleep) mode while MIDI data is being transferred, or returning from
sleep mode
- Connecting/disconnecting the cable while the power of the PF-500 is on
- Turning the power of the PF-500 on/off, starting up your computer, or installing the driver while a
large amount of data is being transferred
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PF-500