#1409 MAGSPEED WHEEL: Ultra-fast, precise, quiet MagSpeed electromagnetic scrolling DARKFIELD 4000 DPI SENSOR: Darkfield 4000 DPI sensor for precise tracking on any surface, even glass (up to 4mm in thickness) COMFORTABLE DESIGN: Tactile reference for hand positioning makes it easy to stay oriented and in your flow. System Requirements-USB Receiver- Required- Available USB port, Windows 7,8,10 or later, macOS 10.13 or later, Linux 9. Bluetooth- Windows 8,10 or later, macOS 10.13 or later, iPadOS 13.4 or later, Linux FLOW CROSS-COMPUTER CONTROL: Supports flow cross-computer control across multiple screens. Pair up to 3 devices via Bluetooth Low Energy or Unifying USB receiver