S21 Hashboard for DIY Home Miners | Up To 44 TH/s

Want to build a high-efficiency home Bitcoin miner without spending thousands on a full commercial unit?

This genuine Antminer S21 hashboard is the core component behind the latest generation of DIY “Poor Man’s Avalon Q” style builds — giving home miners access to modern ASIC efficiency in a compact custom setup.

🔥 Up to ~55 TH/s from a SINGLE board
(with proper tuning, cooling, power delivery, and controller setup)

This is NOT a toy miner.
This is serious modern ASIC hardware for builders, tinkerers, and solo miners looking to create:

• Compact high-hashrate miners
• Quiet/custom enclosure builds
• Open-source mining projects
• Home lab mining setups
• Efficient solo mining rigs

🛠️ PERFECT FOR DIY “POOR MAN’S AVALON Q” BUILDS
Instead of buying an expensive turnkey miner, build your own:
✅ S21-class performance
✅ Lower power usage than older generations
✅ Massive hashrate density
✅ Custom airflow + cooling setups
✅ 3D printed enclosure projects
✅ Rackmount or desktop-style miners

When paired with the right PSU, controller, and cooling solution, these boards can deliver incredible performance for DIY home mining enthusiasts.

⚠️ IMPORTANT — PLEASE READ

• This is a USED hashboard
• Board is TESTED and GUARANTEED TO WORK on arrival
• Sold AS-IS
• Cosmetic wear, scratches, dust, or prior-use marks are normal
• Due to the nature of mining hardware, ALL SALES ARE FINAL

📦 Includes:

• (1) Tested Antminer S21 hashboard only

❌ Does NOT include:

• PSU
• Control board
• Fans
• Heatsinks/modifications
• Enclosure
• Cables

🚀 Whether you’re building a custom solo miner, experimenting with ultra-efficient home mining, or creating your own next-gen “Poor Man’s Avalon Q”… this S21 board is the perfect foundation.