S21 Hashboard for DIY Home Miners | Up To 44 TH/s
S21 Hashboard for DIY Home Miners | Up To 44 TH/s
Used board — tested & guaranteed working on arrival
[build] made to order — build & print times in the details below
[ship] from Oregon, USA — cost calculated at checkout
[pay] PayPal — add to cart, then choose PayPal at checkout
[pay] Bitcoin — use the orange Bitcoin button for −8%
| Potential | ~55 TH/s tuned |
| Condition | Used, tested |
| Includes | Board only |
| Bench test | PASS ✓ |
[bench] guaranteed working on arrival
Want to build a high-efficiency home Bitcoin miner without spending thousands on a full commercial unit?
At a glance
- What this is: a genuine used Antminer S21 hashboard — tested and guaranteed working on arrival
- Potential: up to ~55 TH/s from a single board with proper tuning, cooling, power delivery, and controller
- Board only — no PSU, control board, fans, or cables
- Pairs with our Avalon Q enclosure kit and Nakamoto Mining Case
- All sales final on used mining hardware
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.