Solu&reg; New UNO R3 Rev3 Development Board AVR USB for Arduino(cheap, but Not for Beginners,since Replacing the 16u2 (Usb Chip), It Is Cheap, but You Need to Download the USB Driver From Our Web Site, so It Is Not Very Suitable for Beginners, While It Is Also Not so Hard, Which Is Worth a Try.) Can be used in win 7 and win 8 Increased needle socket, convenient you use dupont line. Please note that Replacing the 16u2(usb chip) makes the cost reduced to half, consumers obtain maximum benefits Since replacing the 16u2 (usb chip), it is cheap, but you need to download the USB driver from our web site, so it is not very suitable for beginners, while it is also not so hard, which is worth a try. This version is in the original version of optimization, both guarantee and the original same compatible, and convenient use.