BITMAIN T21 Bitcoin Miner Instruction Manual

T21 Bitcoin Miner

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Specifications

Detailed Characteristics

Performance Curve

Product Usage Instructions

Setup and Installation:

1. Place the T21 miner on a flat, stable surface.

2. Connect the power supply to the miner following the specified
   voltage and current requirements.

3. Connect the miner to the network using an RJ45 Ethernet
   cable.

4. Ensure proper ventilation around the miner to prevent
   overheating.

Maintenance:

Regularly clean the miner and ensure no dust buildup on the fans
or vents.

Monitor the miner’s performance and temperature regularly to
ensure optimal operation.

Troubleshooting:

If the miner is not functioning correctly, refer to the
troubleshooting section of the user manual for guidance on common
issues and solutions.

FAQ (Frequently Asked Questions)

Q: How can I reset the miner to factory settings?

A: To reset the miner to factory settings, locate the reset
button on the device and hold it down for at least 10 seconds until
the lights indicate a reset.

Q: What should I do if the miner is overheating?

A: If the miner is overheating, first ensure proper ventilation.
If the issue persists, check for dust buildup and clean the miner’s
fans and vents. If the problem continues, contact customer support
for further assistance.

Q: How often should I replace the miner’s filters?

A: Filters should be checked regularly for dust accumulation and
replaced as needed to maintain proper airflow and prevent
overheating.

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Value

Power supply
Phase: 3
Input voltage: 380~415 Volt
Input frequency range: 50~60 Hz
Maximum input current: 12 Amp
Hardware configuration
Network connection mode: RJ45 Ethernet 10/100M
Server size (LengthWidthHeight, w/o package): 400212290
mm
Server size (LengthWidthHeight, with package): 570316430
mm
Net weight: 17.0 kg
Gross weight: 19.1 kg
Noise @30: 76 dBA
Environment requirements
Operation temperature: 0~45°C
Storage temperature: -20~70°C
Operation humidity (no condensation): 10%~90% RH
Operation altitude: Up to 2000m

T21
Product Manual
Jul. 2024
BITMAIN TECHNOLOGIES INC. www.bitmain.com

1. Specification
Product Glance
Model Version Crypto algorithm/coins Working mode(1-1) Typical hashrate, TH/s(1-2) Power on wall @30(1-3), Watt(1-2) Power efficiency on wall @30, J/TH(1-2)

T21 Product Manual

Value

T21

10

SHA256 | BTC/BCH/BSV

NEM

HEM

190

233

3610

5126

19.0

22.0

Detailed Characteristics

Value

Power supply
Phase Input voltage(2-1), Volt Input frequency range, Hz Maximum input current, Amp
Hardware configuration
Network connection mode Server size (LengthWidthHeight, w/o package), mm Server size (LengthWidthHeight, with package), mm Net weight, kg Gross weight, kg Noise(2-2) @30, dBA
Environment requirements
Operation temperature, Storage temperature, Operation humidity(no condensation), RH Operation altitude(2-3), m

3 380~415
50~60 12
RJ45 Ethernet 10/100M 400212290 570316430 17.0 19.1 76
0~45 -20~70 10%~90% 2000

Notes:

(1-1) NEM: Normal Energy Mode; HEM: High Energy Mode. (1-2) The Hashrate value, Power on wall, and Power efficiency on wall are all typical values, The actual Hashrate value fluctuates by ±3%, and the actual Power on wall and Power efficiency on wall fluctuate by ±5%. (1-3) Inlet air temperature. (2-1) Caution: Wrong input voltage may probably cause server damaged. (2-2) The noise is loudest when the fan is under maximum RPM(rotation per minute).
(2-3) When the server is used at an altitude from 900m to 2000m, the highest operating temperature decreases by 1 for every increase of 300m.

-2-

2. Performance Curve
(1) Hashrate vs. Ambient Temperature

T21 Product Manual

Hashrate 300(TH/s)
250 233

200

150 190

100

50

0

0

5

T21 Hashrate

NEM

233

233 233

214 214 214

HEM

190

190

190

190 190 190

10 15

20 25

30

35

40

Ambient Temperature ()

45 50

(2) J/T vs. Ambient Temperature

J/T
30.0

25.0 22.0 20.0
19.0 15.0

10.0

5.0

0.0

0

5

T21 J/T

NEM

HEM

22.0

22.0 22.0 22.0 22.0 22.0

19.0

19.0 19.0 19.0

10 15

20

25 30

35

40

45 50

Ambient Temperature ()

-3-

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