Please find below a list with supported 3rd party devices for Gigaset Maxwell 10.
All tests were performed by the Gigaset pro support team.

Headsets

corded RJ9

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USB Webcam

All those devices work under Android 4.2.2 http://www.ideasonboard.org/uvc/#devices

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HDMI Display

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Brand	Model
Samsung	S22C350H

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Brand	Model
Logitech	Bluetooth® Illuminated Keyboard K810

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External Memory

USB Stick

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IP Door Station