Home / Shop Miners / Bitmain Antminer S21+ 235 TH/s Used
Bitmain Antminer S21+ 235 TH/s Used

Bitmain Antminer S21+ 235 TH/s Used

Antminer S21+

Used Bitmain Antminer S21+ miners rated at 235 TH/s. Current supplier availability is offered in a minimum quantity of 500 with 7-day DOA coverage. The product image is representative manufacturer imagery, not a photograph of the exact used units.

HASHRATE
235 TH/s
EFFICIENCY
16.5 J/TH
POWER
3878 W
COOLING
Air

Representative manufacturer/model image; the exact used units may show cosmetic variation.

AVAILABILITY & FULFILLMENT
AvailabilityIn Stock
ConditionUsed
FulfillmentCurrent supplier-available lot. Minimum order: 500 units.
CoverageAll sales are final unless the product page or written order terms expressly state otherwise. Documented transit damage or DOA must be reported within 7 calendar days of confirmed delivery.
This unit draws 3878 W continuously. Confirm your facility's power and cooling capacity before ordering.
CURRENT OFFER
$1,311.93 / unit$5.58 /TH
USD. Standard domestic shipping is included in the displayed price.
AvailabilityIn Stock
Unit price$1,311.93
Minimum quantity500
Minimum order total$655,965.00
Contact Sales about this offerRequest Bulk Quote
Sales-assisted only. BlokForge will resolve these exact blockers before accepting payment:
Used-unit evidenceNeeds verification: condition/grade basis, test method, test duration, lot identity/count.Owner: BlokForge Operations / lot owner · Evidence: Exact lot inspection and test record required
Go to compare →
Bitcoin checkout
Secure Bitcoin checkout is available for eligible orders.

Full specifications

ManufacturerBitmain
ModelAntminer S21+
Algorithm / coinSHA-256 / BTC
Hashrate235 TH/s
Power at wall3878 W
Efficiency16.5 J/TH (lower is better)
CoolingAir
Input voltage220–277 V AC
PhaseSingle-phase
AC frequency50–60 Hz
Input / current draw20 A
NetworkRJ45 Ethernet 10/100M
Unit dimensions450 × 219 × 293 mm
Net unit weight21.5 kg
Operating temperature−20–45 °C
Storage temperature−20–70 °C
Operating humidity10–90% RH, non-condensing
Altitude limit≤ 2,000 m
Manufacturer tolerancesHashrate ±3%; power and efficiency ±5%.

Shipping & fulfillment

Current supplier-available lot. Minimum order: 500 units.

Packaged dimensions630 × 350 × 430 mm
Gross shipping weight24.5 kg

Warranty & returns

All sales are final unless the product page or written order terms expressly state otherwise. Documented transit damage or DOA must be reported within 7 calendar days of confirmed delivery. BlokForge is the first point of contact and coordinates covered claims. The remedy order is repair, equivalent replacement, then credit or refund when repair or replacement is unavailable or where required by law.

Used hardware: final sale except for the stated transit-damage and DOA coverage. No discretionary return for buyer's remorse, profitability, compatibility, facility fit, or changed plans.

Additional manufacturer warranty: No additional manufacturer warranty is represented for this offer.

Delivered theft or non-receipt requires a police report or police case/report number, the applicable carrier process, and reasonable supporting evidence; a report does not guarantee a remedy. Read the complete policy.

Package & power basis

Used miner with manufacturer-standard integrated power supply basis unless the order confirmation states otherwise.

220–277 V AC, 50–60 Hz, single-phase, 20 A.

Setup prerequisites

  • Dedicated electrical circuit sized for continuous 3878 W draw
  • Adequate facility cooling appropriate for the listed air configuration
  • Wired Ethernet connection and a mining-pool account before first boot

FAQ & support

Electrical, hosting, firmware, and payment questions are covered in the support center — or talk to hardware sales before you order.