To display content across three screens simultaneously, make sure each of your host is equipped with 2 DisplayPort ports and 1 HDMI port.
1USB-C+USB-A Data Ports2Two Dispaly Modes32 Switch Methods1CORRECT Connection Method2Connection Ports Display3Use Comparison1Resolution & Cable Length2Wide Compatibility1For Programmers2For Designers3For Entertainment Each computer needs connect with 2* DP cables + 1* HDMI cable+1* USB cable.