Canon Laser Shot LBP3500 Getting Started Manual page 7

NOTE
•
When using Sound, a PC synthesizer (and the driver for PCM synthesizer)
must be installed in your computer. Do not use a PC Speaker driver
(speaker.drv etc.).
•
This printer uses bi-directional communication. Operation of the printer
when connected via unidirectional communication equipment has not
been tested, and as a result, Canon cannot guarantee printer operation
when the printer is connected using unidirectional print servers, USB hubs
or switching devices.
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