3in1 5V 3.3V USB - RS485 RS232 TTL Serial Port Converter Module 
 
It is a three-in-one USB multi-function serial conversion card. Can convert from USB to TTL / RS232 / RS485. Supports WIN10, Win8, Win7, VISTA, WinXp, Win2000, 32-bit, 64-bit systems.
 
The module supports serial port TTL (VCC, GND level , TX, RX interface), serial port RS232 (VCC, GND level, TX, RX interface), serial RS485 of A, B interface.
 
Technical Specifications:
Win10, Win8, Win7, VISTA, WinXp, Win2K, 32-bit, 64-bit system and WinCE, Linux , Supports Mac system
Power output: 5V / 500mA, supports 3.3V / 100mA power output
Operating method: USB , realize TTL, RS485 and RS232 function conversion
Communication: Maximum baud rate up to 2 Mbps
Circuit board: CP2012 chip
Size: 6.5x1.4cm