Why not:
1) PURPOSE-BUILT Hardware (ASIC, FPGA, Time Machines, Vibrators, Sex Robots)
2) MULTI-PURPOSE Hardware (GPUs, Wodden Sticks, Sporks, George Foreman Grille)
Because FPGA is multi-purpose. So it could be something like this
1) Off-the shelf hardware (GPUs, FPGA dev boards, standard cases)
2) Bitcoin-specific hardware (ASICs, custom FPGA boards/kits, framework cases)