Applicable to for Avalon A 721 741 761 821 841 851 921 911 and other popular models, suitable for Avalon A7 A8 A9 A10 models for Avalon Miner 741 is the ROQ Solid Miner, Refined. for Avalon Miner 741 is made with Reliable Open Quality, now with Air forming Cooling Technology. Containing 88 x A3212 16 NM chips, Avalon Miner 741 is the latest Canaan Avalon Miner with a 7.3 Reliable Hash-rate Per Second (RTHS). For maximum usage, you may connect the AvalonMiner Controller to 4 AUC3 devices which may each connect to 5 AvalonMiners for a total simultaneous management of twenty AvalonMiner 741 to reach 146 TH/s (RTHS). Recommend Age:12+y Recommend Age:18+ Gender:Unisex Features:Movie & TV Model Number:C1082508 Model:7 8 9 Serie Colour:As shown Material:pcb Package Contents: 2 x for Auc3 Converter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.