Feature: 1. EXPANSION BOARD: The for MiSTer FPGA Digital IO Board v1.2 is an optional extension that plugs into the for Terasic DE10 Nano SoC. 2. OPTIONAL: For MiSTer IO Digital Board v1.2 includes a jumper for selecting 3.3v or IO on the user IO port. 3. WIDELY COMPATIBLE: Select IO to support the for Sega Mega Drive , for Genesis , forMaster System gamepad using the SNAC adapter board. 4. DIFFERENT FUNCTION: 3 buttons different buttons with different functions, 3 status indicators. Auxiliary memory card (for some cores). 5. CAUTIONS: Digital IO module has an expansion port (in the form of a USB 3.0 port, but not USB!). With 3.5 mm jack for TOSLink. 6. EASY INSTALLATION: The digital IO module has a fan for cooling the FPGA and comes with 1 screw pocket. Easy to install. Specification: Item Type: Digital IO Board Material: PCB For MiSTer Digital IO Board v1.2 Details: The for MiSTer FPGA Digital v1.2 I O board is an optional extension that can be used by plugging into the top of the for Terasic DE10 Nano SoC and allows dual SDRAM modules. It has a USB 3.0 connector and supports the for Sega Mega Drive, for Genesis, for Master System gamepads using the SNAC adapter board.. Package List: 1 x Digital IO Board1 x Fan 4 x Screws 4 x Nuts Note: The SW3 switch on the DE10 Nano motherboard must be toggled to the "On" position before the Digital IO board will work properly. It adds the following features to the for MiSTer platform.For the for Terasic DE10 Nano FPGA boardIncludes silent fanBuilt in on off power switchDigital for TOSLINK connector3.5mm for analogue sound (Tape input)3 user buttons and 3 status LEDsAuxiliary Micro Storage Card slotUser IO port connectorFAQ: Q : What is the purpose of the analogue input connector on the IO board? A : This interface is mainly used as a tape input for external sound devicesExample: TRS 80 I dark box.Q : Where are the connectors for the external buttons and LEDs?A : The 5pin white serial port connects to the pushbutton, the 7pin white serial port connects to the LED.