-cp2102 serial adapter module supports usb to ttl usb to rs232 usb to rs485 ttl to 232 ttl to 485 232 to 485. -USB specification 2.0 not 3.0 compatible with arduino Windows XP/7/8/10 32bits/ 64bits Linux etc. -You need to set the dip switches for different conversion purpose. -Before make 6 in 1 usb to ttl module work you need to install cp2102 driver. -cp2102 usb to ttl adapter widely used with nextion display esp-01s adapter sim7000a board etc.