Device Unknown is a line-style Icon from Sharp Line - Streamline Material set.

The Device Unknown icon shows a document-like panel with horizontal lines beside a bold question mark. Drawn in the sharp line style on a 24px grid, its angular geometry keeps the symbol clear in compact interfaces. Use it for unknown device states, unidentified hardware, device pairing, and troubleshooting screens. It belongs to Sharp Line - Streamline Material set in the Streamline Material family.