Features: 2 standard for your option: 3.0 USB HUB+SD/TF Reader +TYPE C Or 3.0 USB HUB+Audio+TYPE C. No for extra driver needed, plug into the USB 3.0 Port on your laptop and enjoy amazingly fast data sync! Ultra-thin thickness, the usb hub optimizes the size of most flash drives on the market and the reasonable space between each USB port. The built-in for smart chip avoids overcurrent, overvoltage, short circuit and overheat. SD reader version: 3.0 Card reader, can read SD/for MMC/TF/MICRO- SD and other cell phone camera memory cards, backward for USB 2.0/USB1.1. Audio version: TYPE-C to USB3.1 male, backward for USB3.0, USB2.0 & USB1.1 data transfer. Specifications: Material: aluminum alloy Size: approx 13.3x3.5x1.2cm/5.2x1.4x0.5in Standard: Card reader/Audio(optional) Audio version: 3.5mm, external headphones, speakers Package Includes: 1x USB C Dock note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.