conflicting USB cable connections

A printing conflict may arise when the printer and several USB devices are attached to a hub. There are two methods for solving the conflict:

Attach the printer’s USB cable directly to the computer instead of a hub, or

When the printer is attached to a hub, do not use other USB devices also attached to the hub while printing.

automatic paper type option is enabled

When the Automatic option is enabled, the printer takes a few seconds to scan the first page of the print job. This is done to determine the appropriate paper type. To increase the print speed, turn off the Automatic Paper-Type Sensor.

See also:

automatic paper-type sensor

If you continue to have problems, contact HP Customer Care.

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HP 9xx manual Conflicting USB cable connections, Automatic paper type option is enabled