PTB3219 has a 1-channel 4K HDMI input interface and 2-channel 4K HDMI outputs. The video processor has a Wi-Fi 6 wireless router which can connect 16 devices concurrently, reaching a 1.2 Gbps bit rate, and it also has 5G Wi-Fi bridge module to facilitate screen casting and 2.4 to get access to the internet at the same time. 

 The device can receive simultaneously  9-channel 720P wireless screen casting, or 4-channel 1080P wireless screen casting, or 1-channel true 4K wireless screen casting with 4K real-time decoding capability. 

 The video processor also has a screen window layout module that can cut the 4K screen into 9 split screens at most, and each split screen corresponds to three window layouts, thereby greatly offering the on-site users more window layouts choices.