Optimized Mining Power: Experience next-level solo Bitcoin mining. This compact and efficient miner achieves high performance of 308KH/s on a single chip while maintaining low power consumption. Advanced ESP32-S3 Chip: This miner uses the latest ESP32-S3 chip, providing enhanced processing power to reliable and continuous mining operations. Compact Design: Designed to minimize space usage, it can be easily installed in any setting, perfect for both new and experienced miners. Robot Chain Tower: Join the Robot Chain Tower system for a chance to win mining jackpots on every operation, enhancing your mining experience and potential rewards. The NM-bot-chain has no screen, but you can config it with your phone or the NMMiner official flash tool. Master Chip: ESP32-S3FN8 HashRate: 308KH/s Wi-Fi: 802.11 b/g, up to 150Mbps Device management: NMController Power Interface: Type-C USB/SH1.0 connector*2 Power supply range: 4-6V Memory: 384KB ROM; 512KB ; 8MB SPI Flash Intergrated Feature: WiFi 802.11b/g, BLE IO Interface: Type-C USB/12pin 2.54 Heade*2(15 IOs available ) Bluetooth: Bluetooth 5, BLE Display: 3*LEDs Hardware Resource: 2*ADC; 3*UART; 2*I2C; 4*SPI; etc Operating temperature: -20-70 The devices can chained with the power interface one-by-one. The NM-bot-chain also can working with the ESP32-S3 sample programs and development tools from for and Platform.io, users can operate via Bluetooth, Wi-Fi. Main Features: No External computer is needed. The system supports secure connection if the pool supports it. By double-clicking the USER key, allows you to switch to a desktop clock mode with the BTC Lottery running in the background. Note:due to different production batches, the color of heat sink is random, and the designation is not accepted. The product appearance and printed words depending on the batch, but this does not affect use. Quantity:4PCS Colour:Black Material:PCB Package Contents: 1 * NM-bot-chain Board Kit Only the above package content, other products are not included. Note: Light reflection 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.