How to Use: Take out the product and install it in sequence Specification: Item Type: Digital IO Board Kit Material: PCB Memory: for Mister SDRAM XS D V2.9 (128+128MB) Additional Function IC Video and Voice Frequency Interfaces: Analog Voice Frequency (tape input) Network Interface: Ethernet OS: For DE10 Nano For MiSTer Digital IO Board v1.2 Details: The For MiSTer FPGA Digital v1.2 IO Board is anOptional Expansion Board That Can Be Used by Plugging into the Top of the for Terasic DE10 Nano SoC and Allows SDRAM Modules. Has a USB 3.0 Connector That Supports for Mega Drive, for Genesis, for Master System Gamepads Using for SNAC Adapter Boards Added the Following Features for the for MiSTer : For Terasic DE10 Nano FPGA Board Includes Silent Fan or for Noctua NF A4x10 Fan Built in on and off Power Switch Digital for TOSLINK Connector 3.5mm for Analog Voice Frequency (tape input) 3 User Buttons and 3 Status LEDs Auxiliary Micro Storage Card Slot Package List: 1 x HUB 1 x lO Board 1 x DC 1 Point 2 Lines 1 x USB Bridge 1 x For Mister RTC V1.3 Clock Board 2 x For Mister SDRAM XS D V2.9 Board 1 x Fan 4 x Fan Screws 4 x Fan Nuts 5 x lO Plate Screw 5 x lO Plate Nut 1 x User Manual Note: The SW3 switch on the motherboard for DE10 Nano must be turned to the "On" position for the digital IO board to work properly