A:Answer The "2in1" part generally refers to portable computers that are designed to be used in both laptop mode - using a physical keyboard, AND in "tablet" mode, where the physical keyboard is detached, or disabled.
2in1 designs generally fit one of 2 major types: Tablet-type systems with detachable keyboards (like the Microsoft Surface line), and "fold-back" or "Rotating Hinge" designs like this model.
The "x360" seems to indicate that this model's display hinges can rotate through (almost) a complete 360° arc.