Welcome This is my first post on this forum. I have problem with instalation EGPU on my Macbook Pro 13" 2012. I read post about this instalation http://forum.techinferno.com/implementation-guides/6088-2011-13-macbook-pro-gtx660%4010gbps-tb1-sonnet-ee-pro-win8-1-osx10-9-1-%5Bfloppah%5D.html and I don't have any success. My EGPU instalation is nvidia graphics card 9800gt ( for test only), Echo ExpressCard Pro http://www.sonnettech.com/product/echoexpresscard34thunderbolt.html and EXP GDC Laptop External External PCI-E graphics card Expresscard Set VER 5.8 http://www.aliexpress.com/store/product/EXP-GDC-Laptop-External-External-PCI-E-graphics-card-Expresscard-Set/221491_1452008557.html. My system is osx yosemite 10.0.2. and I want to install EGPU in my 10.0.2 osx yosemite. When I change the 2 files NVDAStartup.kext IONDRVSupport.kext. I don't have new card in my osx report system view. Please help me maybe any of you had a similar problem. Thanks.