Product description:Specifications:Working Voltage: 3.3V/5.5V, FT232RL Adapter the perfect choice for your Arduino and Raspberry Pi projects.With over current protection, using 500mA self-restore fuse.Support Win95/98/98se/ME/2000/XP/win7 32bit 64bit /Vsita/, Do not Support Win8Color: Red Pitch:2.54mmUSB Power Supply: 3.3V or 5VSize:43*17mmInterface: Mini USBNote:Chipset: FT232RL, not genuine FTDI chip,Package included:4 x FT232RL USB To TTL Adapter