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Rectangular silver mining unit with front grille and rear power sockets

bitmain

Bitmain Antminer S19j Pro 240-Cb 104Th/s mining hardware

SKU CH-45C2-02ZAN

SHA-256 ASIC miner delivers 104 Th/s at 3120 W with 29.5 J/Th efficiency for Bitcoin and BCH

  • Hash rate104Th/s
  • Hash algorithmSHA-256
  • Supported coinsBitcoin (BTC)
  • Network interfaceRJ45 Ethernet 10/100M
  • Power supply3120w
  • Power efficiency29.5J/TH
  • 104 Th/s SHA-256 hashrate for Bitcoin mining
  • 5 J/TH power efficiency lowers electricity cost
  • 3120 W power supply matches 220 V input requirement
  • RJ45 Ethernet 10/100M provides stable network link
  • Compact 400×195.5×290 mm frame fits dense rack layouts

Purpose-built SHA-256 miner

The Bitmain Antminer S19j Pro 240-Cb is a dedicated ASIC system that delivers 104Th/s for Bitcoin and Bitcoin Cash mining. It draws 3120W at 29.5J/TH efficiency and connects through a 10/100M RJ45 Ethernet port. The unit measures 400 by 195.5 by 290mm and weighs 14.6kg.

Suited for 220V facilities

This model requires a 220V input; incorrect voltage can damage the hardware. It is intended for operators who can provide stable power and keep ambient temperatures between 0°C and 40°C. Buyers without access to 220V supply or adequate cooling should consider other equipment.

Rack-mount installation notes

The rectangular chassis fits standard shelving, but the 14.6kg weight demands sturdy rails or brackets. Common issues include insufficient PDU capacity for 3120W draw and restricted airflow when units are stacked too tightly. Verify voltage, power budget and clearance before powering on.

How it compares

Measured against everything we stock in ASIC Hardware & PCIe Risers, at today’s prices. Recalculated every night.

Price $984.99
Pricier than about 61% of the 566 comparable items (median $792.99).

New to this? Buying an ASIC miner with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameBitmain
Product lineS19j Pro
Model name240-Cb
Product typeMining System
Performance
Hash rate104Th/s
Hash algorithmSHA-256
Connectivity
Network interfaceRJ45 Ethernet 10/100M
Power
Power supply3120w
Power efficiency29.5J/TH
Size & build
Measurements400 × 195.5 × 290 mm
Product weight14.6kg
Compatibility
Supported coinsBitcoin (BTC)
Environment & compliance
Operation temperature0 °C to 40 °C
Storage temperature range-20 °C-70 °C

Questions about this item

What voltage supply must I already have for the Antminer S19j Pro 240-Cb to operate?

The miner requires a 220 V input; using a different voltage can damage the unit.

Will the RJ45 Ethernet 10/100M port work with my existing 1 Gbps network switch?

Yes, the 10/100M port will connect to a gigabit switch and negotiate at 100 Mbps.

How can I confirm the 104Th/s hashrate is being reached after setup?

Check the miner dashboard or pool statistics; they should report a rate near 104 Th/s with power efficiency around 29.5 J/TH.

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