Promethean ActivExpression Classroom Response System 32-Piece Kit Promethean ActivExpression classroom/student response system. Approximately 32 student response devices in the original fitted Promethean carrying case. Includes ActivHub USB receiver, teacher/controller handset, cable, ActivInspire software/resources and accessories shown. Previously used educational equipment. I have not fully tested the complete system or verified current computer/software compatibility, so selling as untested. Great for a school, teacher, homeschool/co-op, training facility or replacement equipment. Everything included is shown in the photos.