Opened but never used apart from a 10 minute test. Works really well

• 4K Enabled for HDMI® & DisplayPort™

• Dual Screen, Mirror and Extended (Windows Compatible Only)

• Dual Screen and Mirror (Mac Compatible)

• 2x USB 3.0, SD Reader, USB-C

• Gigabit Ethernet

• 100W Power Delivery

• Integrated USB 3.1 Type-C Gen 2 Cable

• Lightweight, Portable Design

• Windows & MAC Compatible

• Free UK Based Technical Support