The specification is primarily targeted at peripheral developers and platform/adapter developers, but provides valuable information for platform operating system/BIOS/device driver, adapter IHVs/ISVs, and system OEMs. This specification can be used for developing new products and associated software. Product developers using this specification are expected to know and understand the USB 2.0 Specification. Specifically, USB 3.1 devices must implement device framework commands and descriptors as defined in the USB 2.0 Specification. Devices operating at the new 10 Gbps (Gen 2) speed must implement the SuperSpeedPlus enhancements defined in this version of the specification.