1. Multifunctional notebook expansion dock adapter. 5 kinds of ports in total: 2 USB 3.0 ports & gigabit network card interface & 1 pen hole & 1 SD card slot & 1 TF card slot.
2. Connect to the laptop to get rid of the limit of computer port and meet your needs for office work or entertainment.
3. High speed of transmission.
4. Got CE and FCC certifications.