for Mister-USB Hub Board: This is an optional add-on USB Hub for convenient USB device connections.      With this board the for MiSTer has an extra USB ports that fit snugly under the existing chassis. The USB Bridge seamlessly connects to the DE10-Nano SoC board without any additional wires.     Upstream micro-USB port     5V DC connection.     Based on FE2.1 chip     for MiSTer IO Board: The for MiSTer IO Board is an optional expansion that plugs on top of the for Terasic DE10-Nano SoC. It adds the following features to the for MiSTer Platform:     VGA Connector. Check Analog video output compatibility     3.5mm Audio Jack with TOSLink     3 Buttons     3 Status LEDs     Secondary SD card (for some cores)     FAN for cooling the FPGA     Expansion connector (in the form of USB 3.0 connector, but it's not USB )     Additional connectors to integrate the for MiSTer into cases.     The appearance and color of products from different batches may vary, which does not affect their use     Colour:silver/black     Material:Metal+PCB          Package Contents:     1 x Kit          Only the above package content, other products are not included.     Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.                             For Mister FPGA 128MB Motherboard V2.9+USB Hub V2.1 With DIY Metal Case Kit For Terasic DE10-Nano Mister FPGA                        for Mister-USB Hub Board: This is an optional add-on USB Hub for convenient USB device connections.      With this board the for MiSTer has an extra USB ports that fit snugly under the existing chassis. The USB Bridge seamlessly connects to the DE10-Nano SoC board without any additional wires.     Upstream micro-USB port     5V DC connection.     Based on FE2.1 chip     for MiSTer IO Board: The for MiSTer IO Board is an optional expansion that plugs on top of the for Terasic DE10-Nano SoC. It adds the following features to the for MiSTer Platform:     VGA Connector. Check Analog video output compatibility     3.5mm Audio Jack with TOSLink     3 Buttons     3 Status LEDs     Secondary SD card (for some cores)     FAN for cooling the FPGA     Expansion connector (in the form of USB 3.0 connector, but it's not USB )     Additional connectors to integrate the for MiSTer into cases.