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cp210x series 2102 serial adapter module supports usb to ttl, usb to rs232, usb to rs485, ttl to 232, ttl to 485, 232 to 485. Before make 6 in 1 usb to ttl module work, you need to install cp210x driver. USB 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. usb to ttl converter module works at 5V and 3.3V, can act as a bridge for hardware without needing a computer or a USB port