Main Control Chip: BIGTREETECH Octopus V1.1 control board adoptes ARM Cortex-M4 series STM32F446ZET6 32-bit microcontroller at 180MHz with 512Kb flash ROM. Notice: Input voltage only supports 24V, 12V is not allowed. CAN BUSbtt octopus v1.1 motherboard supports CAN Bus connectivity using an ethernet connector. This CAN Bus connection allows to expand control board with other expansion boards very easily. 6 PWM Fans Plus 2 The Octopus v1.1 Mainboard offers up to 6 controllable PWM fans and additional 2 without control with the possibility of voltage selection from 5V, 12V or 24V.The BTT Octopus also has 8 sockets for drivers, making it an ideal electronics for demanding machines. Supports Klipper/Marlinbigtreetech octopus v1.1 control board for voron 2.4 supports running Klipper and Marlin.Supports firmware update by USB (recommended) and DFU mode(advanced users). Updating via DFU mode is to send firmware to the board directly from PC with no need for