NewerTech will debut its upgraded design for the miniStack at this week's Expo. The miniStack v2 is engineered to increase drive capacity 80GB to 500GB while adding multiple FireWire and USB port options. Designed to work with the Mac mini, it features data buffers of 2MB or 8MB (depending on drive size), an Oxford911+ chipset, and integrated 2-port FireWire and 3-port USB 2.0/1.1 powered hubs. In addition, the NewerTech miniStack features a smart power switch so the drive turns on and off with its corresponding mini or PC as well as a thermal probe that automatically regulates and varies fan speed according to the temperature. The miniStack v2 measures 6.5 x 6.5 x 1.5 inches, and retails for $140 for an 80GB version; it is available in capacities up to 500GB, while "add your own hard drive" kit is available for $80.