With drawing process, the surface is smooth and can effective protect from smashing damage. It is easy to install, requires no drive and screws. The grommet hole design replaces the original table hole and solves the desktop charging and transmission problem at the same time.With 5 ports and high transmission speed, it can provide fast data transmission in seconds, meeting daily office needs. It also has 2 audio interface for enjoying music, supporting headphone and microphone input respectively.Made of high-quality ABS, this USB hub is sturdy and durable.It is 4.7cm high, and the top diameter is 6.9cm, the bottom diameter is 5.9cm. The length of the USB cable is 1.5m. It is suitable for use on desks with a desk hole diameter of 60mm.It is applicable to devices like microphone, headphone, tablet, notebook and desktop computer, etc.Item Name: USB HubMaterial:ABSPower Supply: USB3.0 Type-ATransmission Rate: 5GbpsOutput Interface: USB3.0 Type-Ax2, USB3.0 Type- Cx1, Audio Interfacex2Input Interface: USB3.0 Type-A x 1Compatible System: for Windows, for Linux, for Mac OSAuthentication: CE, FCC, RoHSSize Details:Top Diameter: 6.9cm/2.72" (Approx.)Bottom Diameter: 5.9cm/2.32" (Approx.)Height: 4.7cm/1.85" (Approx.)USB Cable Length: 150cm/59.06" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 X User Manual1 X Desktop Grommet USB Hub