Product parameters:Default specification: Neutral EnglishHDMI interface: supports 4K/30Hz HD screen displayUSB3.0: data transfer 5Gbps (1 GIGAByte movie can be transferred in 5 seconds)RJ45 port: supports 100Mbps EthernetSD/TF card reader: It does not support reading TF and SD cards at the same time3.5mm auxiliary jack: suitable for headset, headset speakerType C PD port: 87W PD charging (Max)Features: USB3.0, HDMI, VGA, RJ45, SD/TF card reader, PD charging USB HUBWarm prompt1) When connecting to devices that need a lot of electricity, please provide power supply.2) Because the hard disk drive consumes a lot of power, if the hard disk drive fails to be read, please connect it to the charger for power supply3) Due to the limitations of the Mac OS, the MacBook cannot be divided into three different monitors.4) Windows10/Windows7 system can support three different displays.5) Video output resolution is 1080P/60Hz, while HDMI and VGA work simultaneously.6) Video output resolution is 4K/30Hz, while two HDMis work simultaneously.7) It does not support reading TF cards and SD cards at the same time.8) The HUB may get hot when using, please rest assured that this is a normal phenomenon and will not affect the work.