Important Notes When using:1:Duplicate max three same external screens, but it can not extend three different external screens, Please be well note that you can connect three monitors simultaneously in your Windows System Devices, while in Mac OS Devices,HDMI and DVI can not be connected together.2: Because of the system limitation, our adapter does not support Chromecast, not support transmitting the sound of your PS4, PS5; you can connect PS4 or PS5 to the external speaker to transmit the sound.3: If you buy adapter from us, we do not supply HDMI, VGA or DVI cables.Instructions for use:1:Please connect HDMI Input Port to your Input Device, such as Set Top Box, Computer/Laptops etc.2:Please connect an HDMI or VGA or DVI cable from our adapter's Female Ports to your Output Device, such as Projectors, Monitors , Tvs.3:Please connect Micro USB cable from our Adapters to your USB Devices in case insufficient power if needed, if you connect to Mac OS Input Devices, this step is necessary, or you can noy get content displayed in your monitors.4:No matter You only connnect one external display or Multi-displays, you can output sound by connnecting from our Adapter's audio 3.5mm jack to your external speakers, and if your connected HDMI displays with Audio Out and Speakers Built in, the sound can be also directly transmitted along with your video to your HDMI MonitorsPacking Contents:- 1 x 4-in-1 HDMI to Hdmi/dvi/vga Adapter Cable with Audio Output Converter.- 1 x Audio cable- 1 x Micro USB Power cable.