So you would like to build your own streaming or gaming cluster with multiple Raspberry Pi modules? The Turing Pi 2 Cluster Computer has you covered. It is a 4-node mini ITX cluster board that runs Raspberry Pi CM4 or NVIDIA Jetson compute modules.
This cluster board has USB, HDMI, Ethernet, and all the port your need to connect your peripherals. It also has 2 x SATA III ports and 2 mini PCI Express slots. You can find out more about it here.