The invention describes extruded member systems to which a photovoltaic device is secured to an architectural surface. A first trimming data is stored in the trimming data storage area, and is for adjusting a read voltage to be applied to a selected word line as one of the plurality of word lines in a read operation. Communications between the first group of nodes can occur simultaneously with communications between the second group of nodes via the shared power line medium. The method comprises receiving a packet destined for a user’s internal network; forwarding the packet to at least one virtual machine based upon a virtual machine configuration table; processing the forwarded packet on the at least one virtual machine; and releasing the packet to the user’s internal network based upon results of the processing. Each clamping tab has a hook formed outwardly at an end thereof. The station can interrogate one or more selected systems and evaluate responses therefrom.