4 in 1 can display and expand
HDMI HD 1080p output, USB interface extension mouse, keyboard, easy to read SD/Micro SD card by card reader slot

Small screen becomes larger, laptop connected TV
Easy to connect HDMI interface of TV, audio and video synchronous output

Conference office, laptop connected projector
Clear presentation, synchronization of pictures, and convenient large screen meeting

Alloy material
Metal texture, high efficiency heat dissipation, shielding interference