Use the Windows USB Installation Tool by Gigabyte Tool to Add USB 3.0 Support to the Install.wim and then manually Apply OEM SLP. If you need to install these, download the Dell Windows 7 Professional Reinstallation OEM ISO, delete the EI.cfg File in the sources folder. The Dell Windows 7 Home Premium Reinstallation OEM and Dell Windows 7 Ultimate Reinstallation OEM ISO are not available to Download. Contents 2: Dell Windows 7 Home Premium + Ultimate OEM