?Built-in PL2303TA Chipset?- this usb to ttl serial cable with built-in PL2303TA chip is easiest way ever to connect to your microcontroller/Raspberry Pi/WiFi router serial console port. | ?Wide OS Support?- this usb ttl serial cable is supported by most common OSes such as win XP/VISTA/7/8/8.1/10/ Mac OS X/Linux. (please refer to http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41, and then download the Prolific 2303 driver). If you are running Linux, drivers are already included in the kernel, no need to install anything. | ?Four Wire?- Red - 5v; Black - Ground; Green -Tx; White - Rx | ?Power Output?- this usb debug cable can be configured for either v5 or v3.3 power output. Built-in PL2303 chipset has an on-board DC-DC converter. | ?Wide Application?- this pl2303 usb ttl cable widely used for laboratories, product testing and low cost MCU communications etc.