Raspberry Pi controller for Canaan Avalon models including (but not limited to) 721, 741, 821, 841, 921 and others. Please indicate in your purchase which model is needed; also, please provide mining pool preference and account name if you want the controller pre-configured. Appearance of controller (i.e., case model) maybe different than depicted. Controllers are tested for appropriate function prior to shipping.

Item color displayed in photos may be showing slightly different since monitors are not calibrated same.