Complex sentence: Type B receptacles in USB 3.0, as found on peripheral devices, are larger than in USB 2.0, and accept both the larger USB 3.0 Type B plug and the smaller USB 2.0 (or earlier) Type B plug.
Split into simpler sentences: Type B receptacles in USB 3.0 are larger than in USB 2.0. The larger USB 3.0 Type B receptacle, as found on peripheral devices, accepts both the larger USB 3.0 Type B plug and the smaller USB 2.0 (or earlier) Type B plug.