The SMI-US-3L is an interchangeable AC input blade designed for use with North American power outlets. It is specifically engineered to be compatible with CUI's SMI10-USB series of wall power adapters. This blade allows the associated power adapter system to meet Level VI efficiency standards. The physical dimensions are 35.33 x 26.60 x 30.80 mm. The primary application is to provide a modular power solution, enabling a single power adapter model to be used in different geographical regions by swapping the input blade.