Features: USB3.0 supports data transmission; HDMI-compatible supports high-definition video transmission. Support card reader. Audio-port supports microphone and headset. Video output for Ultra-high definition. The HDMI-compatible port can be used simultaneously to mirror or extend the display of your laptop to your TV, monitor or projector. Multi-ports HUB could keep you away from the trouble of plugging and unplugging repeatedly. Supports super faster data transfer, which allows you to transfer high definition movies or files in just seconds. Imported electronic components are adopted, and professional-SMT with built-in multiple-protection functions ensures stable performance. 4-in-1 USB splitter extension has 4 charging&data transmission ports, for various devices. Specifications: Material:Plastic Size:Approx.6.32x6.2x3.12cm/2.48x2.44x1.22inch Color:Black Package Includes: 1x Docking Station note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.