Using the original FT232BL industrial grade chip, external EEPRON (93C46) is more stable
Support Windows 10, 8, 7, XP

Supports 3 kinds of power supply mode: 5V external power supply; 3.3V external power supply; by external power supply (3.3V-5V)
With 3 LED: RXD LED, POWER LED, TXD LED
GND, RXD, TXD, 3V3, 5V: the bent pin out
The rest of the function PIN: reserved solder pad CTS, RTS
With 500MA self recovery fuse back to not burn

Application case:
RS-232 traditional device upgrade to USB
USB to RS-232 serial adapter

Use instructions: (to access MCU as an example)
GND: GND
RXD: MCU.TX (signal flow: MCU.TX >> FT232 >> PC.RX)
TXD: MCU.RX (signal flow: MCU.RX << FT232 << PC.TX)
3V3/5V: 3.3V or 5V (output module supplied by USB to the jumper cap jump to 3.3V or 5V)
RTS: MCU.CTS (signal flow: MCU.CTS << FT232 << PC.RTS)
CTS: MCU.RTS (signal flow: MCU.RTS >> FT232 >> PC.CTS)