The Antminer S21 Hydro Control Board C59 / C89 is a premium replacement motherboard designed specifically for S21 Hydro immersion-cooled miners. Engineered to ensure stable operation, consistent hash rates, and efficient mining, this control board is ideal for miners experiencing faulty or underperforming Hydro miner boards.

Constructed with high-quality industrial components, the board guarantees durable, reliable performance under continuous operation. Its plug-and-play design enables quick and hassle-free installation, minimizing downtime and keeping your mining operations running smoothly.

Key Features

• Compatibility: Antminer S21 Hydro immersion-cooled miners

• Reliable Performance: Maintains stable hash rates and consistent operation

• Durable Construction: Premium industrial-grade components for long-term use

• Easy Installation: Plug-and-play design for quick replacement

• Optimized for Hydro Mining: Supports continuous 24/7 operation in immersion setups

• Repair Solution: Perfect for repairing or upgrading faulty control boards

Why Choose This Control Board?

✅ Genuine replacement for Antminer S21 Hydro miners
✅ Restores miner stability and peak performance
✅ Durable and reliable for long-term immersion mining
✅ Quick installation reduces downtime