Asicminer Block Erupter USB 330mh/s-336mh/s Sapphire Miner The BlockErupter Sapphire USB series is the second major product of ASICMINER. Serves as a replacement of GPUs for the mining hobbyists. Speed: 330Mh/s-336Mh/s! With Great Stability and very Low HW errors! Power Usage: Only 500mA - 510mA, 2.5w, per Usb. Beautiful Green LED, To Show when Powered, and blinks while hashing.