Features Lightweight and portableThe hub itself is very light. The weight does not exceed 100 grams. It is suitable for travel and carrying, without occupying space, no burden.Plug and playThis dock does not need to install drivers, and has extensive compatibility with MacBook, MacBook Pro, etc. The hub has multiple ports, multiple functions, effective transmiion, pictures and files can be transmitted within a few seconds.4K UHD HDMI outputMirror or use the USB-C HDMI adapter to extend the screen. Directly transmit a 4K HD directly transmitted directly at 30Hz. The full HD 1080P or 3D video streaming type is also transmitted to an external monitor, HDTV or projector. Note: Please make sure that the Type-C port of your laptop supports USB-C video output before purchasing. Note There are 6 models optional, different model with different interface and appearance, please choose suitable model before purchase:3 -in -1: HDMI x 1 4k@ 30HZ+USB 3.0 +1USB 2.0 x 14 -in -1: HDMI x 1 4k@ 30HZ + USB3.0 x 1 + USB 2.0 x 1 + PDx 15 -in -1: HDMI x 1 4k@ 30HZ + USB3.0 x 1 + USB2.0 x 1 + PDx 1 + RJ456 -in -1: HDMI x 1 4k@ 30HZ + USB3.0 x 1 + USB2.0 x 1 + PDx 1 + TF slot x 1 + SD slot x 17 -in -1: HDMI x 1 4k@ 30HZ+USB3.0 x 1 + USB2.0 x 2 + PDx 1 + TF slot x 1 + SD slot x 18 -in -1: HDMI x 1 4k@ 30HZ + USB3.0 x 1 + USB2.0 x 1 + Type c x 1 + PDx 1 + RJ45 + TF slot x 1 + SD slot x 1