Releases labeled "v4.b" typically included "slipstreamed" updates, such as basic USB 3.0 support
Here’s why I can’t offer a full analysis, and what you should know instead: windows 7 ultimate usb drive edition x86 v4.b by imortaluz
, which was standard for the older hardware and low-spec netbooks this version targeted. Core Feature: This version is primarily a "Lite Edition," Releases labeled "v4