STM32F407G-DISC1 ST-LINK/V2-A with virtual COM port problem (Windows10)

[SArsl.1]

It is from UM1472 User manual ,,,

file:///C:/Users/Yeni/Desktop/stm32F407/dm00039084-discovery-kit-with-stm32f407vg-mcu-stmicroelectronics.pdf ,,,

I am trying to use UART with Tera Term,

As can see ,

The ST-LINK/V2-A supports a virtual COM port (VCP) on U2 pin 12 (ST-LINK_TX) and U2 pin 13 (ST-LINK_RX) but these pins are not connected to the USART of the STM32F407 microcontroller for mbed support.

I did not understand the solutions of connection of ST-LINK/V2-A with virtual COM port 

also one of solution says "Using flying wires " how is it possible,using flying wires with SMD mcu

Could you help me please

[Tesla DeLorean]

You need thin wires and someone who can solder in tight spaces.

Typically done under a microscope, with flux, and fine tip.​

[SArsl.1]

Mr.Thank you very much for information

Could you tell me please about first solution

its says "USB dongle from market" is it like a USB to TTL converter?

[Tesla DeLorean]

Yes, typically a FTDI or SiLabs USB-To-CMOS Serial type adapter, at 3 or 3.3V

The levels here are not RS232 compatible.

If you just need debug output, the PB3 SWO should be wired, or a solder-bridge away.

Here you'd use a SWV Serial Wire Viewer application, either in the ST-LINK Utilities, or newer STM32 Cube Programmer.