Bitmain Antminer L3+ Tuned L3+ 650MH/s HiveOS or Factory Stock Firmware - USA SHIPS NOW
Unit will come preinstalled with HiveOS Firmware that allows unit to be tuned up to 750mh/s safely with high power draw, or underclocked at 500mh/s with lower power draw.
Please refer to HiveOS webpage for more info regarding firmware.
Unit may come on factory firmware at request of user.