1、3.5mm Audio Interface: The notebook IO board is equipped with a 3.5mm audio interface for a certain model. The audio interface of this product is suitable for most devices on the market. 2、VGA Interface: IO replacement board has a VGA interface, check the compatibility of analog video output to maximize the effect. 3、With Expansion Interface: IO board PC has a VGA expansion interface, which is a USB 3.0 interface, not a USB, which provides convenience for many enthusiasts. 4、Precise Slots: IO replacement board has precise notches, suitable for FPGA IO analog board,VGA video output 3.5mm headphone port replacement port. 5、3 Buttons 3 Status Indicators: The 3 buttons IO board is convenient. The IO board has 3 buttons and 3 status indicators. Secondary memory card (for some cores). Item Type: IO Board Product Material: PCB Parameter: VGA Connector, Check Analog Video Output Compatibility 3.5mm Audio Jack:Support Button: 3 3 Status LED: Support Secondary Memory Card (for Some Kernels): Support Fan: Used to Cool the FPGA Expansion Connector: In the Form of a USB 3.0 Connector, but Not USB Additional Connector for Integrating into the Chassis 1 x IO Board 1 x Fan 4 x Screws 4 x Nuts