Disposable loading units configured for mounting to a robotic arm for performing at least one surgical task are presented. The composite layers include a discontinuous magnetic phase such as Co, Ni or Fe platelets, and a continuous nonmagnetic phase such as C, AlOx, SiOx, ZrOx, Cu, Ag and Au. 2 and RE is selected from europium and cerium. The ability to change the configuration of the straps is accomplished by providing an interconnection between the straps such that the waist strap can loop through the neck strap when the device is in a harness-type configuration and separated to change the device to an over-the-shoulder configuration with the equipment positioned proximate the user’s hip. Further embodiments provide a system including a memory device, having a regulator circuit coupled to a plurality of access lines of a NAND memory cell, and a switching circuit configured to sequentially bias at least one of the plurality of the access lines between a first voltage level and a second voltage level based on an input signal.