This guy is ruthless. He sells non existent "Updated Chipset" that does not exist, when in fact he installs used defective chips that will fail in a few months. There are plenty of videos on YouTube explaining why no one has new video chips for Apple products….they simply Do Not Exist. | If the Logic Board fails before the warranty period is expired he tells you to send it back…… but that’s where it ends. He keeps your board, repairs it, and sells it to another sucker on eBay. He knows you can’t leave negative feedback because the option has times out. | Before I knew it was a scam I sent him 8 boards that All Failed! I sent two of them back for warranty but he never returned them. | Aliases: | eBay store…. rnrcomputer | LAI JIAN RUAN | NYclaptoptech | R&R Computers | Avoid this guy and his & 036;875,000 mortgage payments!