Unable to connect to board

[stewcop23]

I'm using Marlin 2.0.9.3 and windows. I have been successful in uploading firmware but when it comes to connecting the board to my computer (I'm using pronterface) it won't connect. Before you give me the same responses that I've been getting from everyone on the internet.

Yes I have set serial port 2 to be -1 Yes I have tried to update drivers (couldn't really find them though) Nothing shows up on the device manager

I'm probably doing one small thing wrong, but any help is appreciated

[sheikho2]

/**

• Select the serial port on the board to use for communication with the host.
• This allows the connection of wireless adapters (for instance) to non-default port pins.
• Serial port -1 is the USB emulated serial port, if available.
• Note: The first serial port (-1 or 0) will always be used by the Arduino bootloader.
• :[-1, 0, 1, 2, 3, 4, 5, 6, 7] */ #define SERIAL_PORT 3

/**

• Serial Port Baud Rate
• This is the default communication speed for all serial ports.
• Set the baud rate defaults for additional serial ports below.
• 250000 works in most cases, but you might try a lower speed if
• you commonly experience drop-outs during host printing.
• You may try up to 1000000 to speed up SD file transfer.
• :[2400, 9600, 19200, 38400, 57600, 115200, 250000, 500000, 1000000] */ #define BAUDRATE 250000 //#define BAUD_RATE_GCODE // Enable G-code M575 to set the baud rate

/**

• Select a secondary serial port on the board to use for communication with the host.
• Currently Ethernet (-2) is only supported on Teensy 4.1 boards.
• :[-2, -1, 0, 1, 2, 3, 4, 5, 6, 7] */ #define SERIAL_PORT_2 -1 #define BAUDRATE_2 250000 // Enable to override BAUDRATE

/**

• Select a third serial port on the board to use for communication with the host.
• Currently only supported for AVR, DUE, LPC1768/9 and STM32/STM32F1
• :[-1, 0, 1, 2, 3, 4, 5, 6, 7] */ #define SERIAL_PORT_3 1 #define BAUDRATE_3 250000 // Enable to override BAUDRATE