How to Setup Bitmain Antminer S21 XP？

What Should You Do Before Setting Up your Antminer S21 XP?

Antminer S21 XP: The Ultimate Bitcoin Mining Rig – 270 TH/s Hash Rate & 13.5 J/TH Efficiency

The Antminer S21 XP (270Th) is Bitmain’s latest air-cooled Bitcoin miner, designed to deliver unmatched efficiency and performance in the competitive world of cryptocurrency mining. With an insane hashrate of 270Th/s and a power consumption of just 3650W, this miner sets a new standard for SHA-256 algorithm mining.

If you’re looking for the most efficient Bitcoin mining hardware, the Antminer S21 XP should be at the top of your list.

Before mining with your Antminer S21 XP, follow this inspection guide to ensure safety and optimal performance.

Antminer S21 XP Setup Guide – Unboxing & Preparation Checklist

Step	Details
1. Unboxing & Inspection	Carefully unbox the Antminer S21 XP and check for shipping damage. Verify all included components: miner unit and user manual. Missing parts may affect your mining setup.
2. Power Supply Setup	Use a high-efficiency mining PSU (e.g., APW17 or compatible) with stable 220V power input. Ensure power cables are securely connected to avoid voltage drops.
3. Network Configuration	Connect the Antminer S21 XP via a reliable Ethernet cable (Cat5e or higher) to your router or switch. For stable mining, consider assigning a static IP address.
4. Cooling & Environment	Place the miner in a well-ventilated area with ambient temperature between 10–35°C (50–95°F). Proper airflow prevents overheating and extends hardware lifespan.
5. Safety Precautions	Ground the Bitmain Antminer to prevent static damage. Use a surge protector and avoid humid environments to protect your ASIC mining hardware.
6. Required Tools	An IP scanner tool, and a multimeter (for voltage checks) ready before starting the setup process.

How to Set Up Your Antminer S21 XP for Mining?

The S21 XP server is Bitmain’s newest version in the 21 server series. Power supply APW171215 is part of S21 XP server. All S21 XP servers are tested and configured prior to shipping to ensure easy set up.

NOTE:
(1) Power supply APW171215 is part of S21 XP server.
(2) One ANTWIRE‐20SP power cord is needed and should be connected to PDU.

Caution:
1.Please refer to the layout above to place your goodsin usage in case of any damage.
2.The equipment must be connected to an earthed mains socket‐outlet. The socket‐outletshall be installed near the equipment and shall be easily accessible.
3.The equipment hastwo power inputs, only by connecting those two power supply sockets simultaneously can the equipment run. When the equipment is powered off, be sure to power off all power inputs.
4.DO NOT remove any screws and cables tied on the product.
5.DONOT PRESS the metal button on the cover.
6.Please note that the actualservershall prevail

Setting up the Miner

Step	Action	Details
1	Go to the official website	Visit: BITMAIN firmware download link Select “Others” on the left, then “IP reporter” on the right.
2	Download the file	Download: IPReporter.zip
3	Extract the file	Unzip the downloaded file.
4	Run IPReporter.exe as Administrator	Right-click IPReporter.exe and select “Run as Administrator.”
5	Select an option	Choose one: – Shelf, Step, Position (for farm servers) – Default (for home servers)
6	Start the process	Click “Start.”
7	Press the IP Report button	On the control panel, press and hold the IP Report button until it beeps (~5 seconds). The IP address will appear on your computer screen.
8	Enter the IP in a browser	Type the displayed IP address into your web browser.
9	Log in	Username: root Password: root
10 (Optional)	Assign a Static IP	In the Protocol section, configure: – IP Address – Subnet Mask – Gateway – DNS Server
11	Enter network details	Fill in the required network settings.
12	Save settings	Click “Save.”
13	Learn more	For gateway & DNS help: BITMAIN Support Article

Configuring the Miner

Setting up the Pool

Click Settings >Set the options according to the following table>Click Save after the configuration

Option	Description
Mining address	Enter the address of your desired pool. The S21 XP. servers support three mining pools, with priority order: – Pool 1 (highest priority) – Pool 2 (used if Pool 1 is offline) – Pool 3 (used if Pools 1 & 2 are offline).
Name	Your worker ID on the selected pool.
Password (optional)	The password for your selected worker (if required by the pool).

Monitoring Your Miner

To check the operating status of your server (taking S21 XP 270T as an example):

Click dashboard marked below to check the server status.

Monitor your server according to the descriptionsin the following table

Option	Description
Number of chips	Number of chips detected in the chain.
Frequency	ASIC frequency setting.
Real Hashrate	Real-time hashrate of each hash board (GH/s).
Inlet Temp	Temperature of the inlet (°C).
Outlet Temp	Temperature of the outlet (°C).
Chip state	Status indicators: ● Green Icon – Normal operation ● Red Icon – Abnormal condition

Administering Your S21 XP Miner

1 Checking S21 XP Firmware Version

Step	Action	Details
1	Enter server backstage	Locate the firmware version at the bottom of the page.
2	Check File System Version	Displays the firmware date (e.g., 20240608).

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2 Upgrading S21 XP System

Step	Action	Details
1	Go to System > Firmware Upgrade	Click to open the upgrade interface.
2	Keep Settings option	– ✔ Keep settings (retains current configurations, default) – ✖ Unselect (resets to factory defaults)
3	Upload & update	Select the upgrade file and click Update.
4	Post-upgrade restart	After completion, the server reboots to the settings page.
5	Choose action	– Reboot: Applies new firmware immediately. – Go Back: Continues mining; new firmware loads on next restart.

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3 Modifying Your Password

Step	Action	Details
1	Navigate to System > Password	Open the password settings tab.
2	Set new password	Enter the new password and click Save.

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4 Restoring Initial Settings

Step	Action	Details
1	Power on & wait	Let the server run for 5 minutes.
2	Hard reset	Press and hold the Reset button for 10 seconds.

Antminer S21 XP Environmental Requirements

Description	Requirement
Operating Temperature	-20°C to 45°C
Operating Humidity	10% to 90% RH (non-condensing)
Storage Temperature	-20°C to 70°C
Storage Humidity	10% to 90% RH (non-condensing)
Maximum Altitude	<2000 meters

Pollution Level	Example Sources	Minimum Distance Requirement	Additional Notes
Heavy Pollution	Smelters, Coal Mines	>5 km	–
Moderate Pollution	Chemical Plants, Rubber Factories, Electroplating Industries	>3.7 km	–
Light Pollution	Food Processing Plants, Leather Tanneries	>2 km	If unavoidable, choose upwind location
Coastal Areas	Seaside, Saltwater Lakes	Avoid within 3.7 km	If unavoidable, ensure airtight structure with AC cooling

Electromagnetic Environmental Conditions
Please keep your site away from transformers, high-voltage cables, transmission lines,and high-current equipment. For example, there should be no high-power AC transformers (>10KA) within 20 meters, and no high-voltage power lines within 50 meters. Additionally, keep your site away from high-power radio transmitters; for example, there should be no high-power radio transmitters (>1500W) within 100 meters.

How to Troubleshoot Common Issues with the Antminer S21 XP?

Bitmain Miner Troubleshooting Guide: Fix Common Issues Quickly

Is your Bitmain miner experiencing problems? Follow this step-by-step troubleshooting guide to resolve network, power, and startup issues efficiently.

1. Unable to Connect to the Network (Detailed Solutions)

Network Connection Problems

If your Antminer S21 XP isn’t connecting to the network, follow these steps:

Step-by-Step Fixes:

1. Physical Connection Check
   • Inspect Ethernet cables for damage
   • Try a different network cable (Cat5e or better recommended)
   • Test with another router/switch port
2. Network Configuration
   • Verify miner IP address (check DHCP or static IP settings)
   • Ensure no IP conflicts on your local network
   • Test with different DNS settings (try Google’s 8.8.8.8)
3. Advanced Troubleshooting
   • Ping test from another computer
   • Check router firewall settings
   • Update miner firmware if available

Pro Tip: Always keep a spare network cable and test with different network hardware when diagnosing connection issues.

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2. Abnormal Mining Power (Performance Troubleshooting)

Diagnosing Hashrate Problems

When your S21 XP shows abnormal mining power:

Comprehensive Checks:

1. Pool Configuration
   • Verify pool URL and port (e.g., stratum+tcp://pool.btc.com:3333)
   • Check worker credentials and password
   • Test with alternative mining pools
2. Hardware Monitoring
   • Check individual hashboard status
   • Monitor chip error rates in dashboard
   • Verify power supply voltage stability
3. Environmental Factors
   • Maintain ambient temperature below 35°C
   • Ensure proper ventilation and airflow
   • Clean dust from fans and heatsinks regularly

Maintenance Recommendation: Schedule weekly cleaning and monthly full hardware inspections for optimal performance.

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3. Miner Cannot Be Turned On (Power Issues Resolution)

Complete Power Failure Diagnosis

If your Antminer won’t power on:

Systematic Approach:

1. Power Supply Verification
   • Test PSU with another device if possible
   • Check voltage output with multimeter
   • Verify all power cables are securely connected
2. Circuit Testing
   • Try different power outlets
   • Check circuit breaker status
   • Test with alternative power cables
3. Hardware Inspection
   • Look for burnt components or unusual smells
   • Check for loose connections inside the miner
   • Inspect power input ports for damage

Safety Note: Always disconnect power before inspecting internal components and use proper anti-static precautions.

What Information Should You Prepare for Customer Support?

When contacting support, having the right information can speed up the process.
Prepare your miner’s model, serial number, a description of the issue, and any relevant logs or error messages.

If your Bitmain Antminer S21 XP is experiencing problems, providing detailed information helps support teams diagnose and resolve issues faster. Below is a structured guide on what details to include when reporting a fault.

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1. Miner Model and Serial Number

What to Provide:

• Correct Model: Antminer S21 XP (confirm it’s not S19 or another variant)
• Serial Number: Found on the miner’s label (e.g., S21XP2024XXXXXXX)

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2. Fault Description

What to Include:

• Failure to Start: Does the miner power on but not hash? Any beeps or LED error codes?
• Connection Issues: Can you access the miner’s dashboard? Does it disconnect frequently?
• Performance Problems: Are hashboards reporting errors? Is fan speed abnormal?

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3. Operation Log & Error Information

How to Retrieve Logs:

1. Access the miner’s web dashboard
2. Navigate to System > Current Logs (and histroy Logs)
3. Download and share the logs

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4. Miner Dashboard Screenshot

What to Capture:

• Full dashboard (including all hashboards)
• System Info tab (firmware version, uptime)
• Pool status & rejected shares

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5. Mining Pool Information

What to Verify:

• Pool URL & Port (e.g., *stratum+tcp://btc.f2pool.com:3333*)
• Worker Name (must match your mining account)

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Final Checklist Before Contacting Support

Before submitting a support ticket, ensure you provide:

1. Model & Serial Number
2. Detailed Fault Description
3. Operation Logs
4. Dashboard Screenshot
5. Mining Pool Settings

What Is the Repair Process for the Antminer S21 XP?

Bitmain Antminer S21 XP Warranty & Repair Process: Complete Step-by-Step Guide

1. Contacting Bitmain Customer Support

When to Contact Support:

• If troubleshooting fails to resolve hardware issues
• When experiencing persistent performance problems
• For warranty claims on defective units

Best Ways to Reach Support:

1. Official Support Portal (Recommended)
   • Visit BITMAIN’s Official Support Page-bottom right corn-online chat
   • https://support.bitmain.com/hc/en-us/requests/new
   • Call: +1(717)502-4531
   • Include detailed fault description and evidence

2. Fault Verification Process

Standard Diagnostic Procedure:

1. Initial Assessment
   • Support will request:
     • Device model and serial number
     • Firmware version
     • Mining pool configuration
     • Error logs and screenshots
2. Remote Diagnostics
   • May request access to your miner dashboard
   • Could ask for specific diagnostic tests
3. Troubleshooting Steps
   • You may be asked to:
     • Try different power supplies
     • Test with alternative firmware
     • Check specific hardware components

Common Resolution Paths:

• Software issues: 70% resolved remotely
• Hardware problems: 30% require repair service

3. Preparing Your Miner for Return

Pre-Shipment Checklist:
✓ Backup your miner configuration
✓ Perform factory reset (if instructed)
✓ Clean the device of dust/debris
✓ Take photos of device condition

Packaging Guidelines:

• Use original packaging if available
• Add sufficient cushioning material
• Include all accessories/cables
• Seal with heavy-duty tape

Shipping Instructions:

1. Print provided shipping label
2. Choose tracked/insured shipping
3. Keep tracking number for reference

4. Repair & Testing Phase

Standard Repair Timeline:

• Receipt confirmation: 1-2 business days
• Diagnosis: 3-5 business days
• Repair: 5-10 business days
• Testing: 2-3 business days

What Happens During Repair:

1. Component-Level Diagnosis
   • Hashboard testing
   • Control board inspection
   • Power supply verification
2. Repair Process
   • Chip replacement if needed
   • Firmware reflashing
   • Thermal paste reapplication
3. Quality Assurance
   • 48-hour burn-in test
   • Performance benchmarking
   • Final inspection

5. Receiving Your Repaired Miner

Post-Repair Process:

1. Shipment Notification
   • You’ll receive tracking information
   • Typical delivery time: 3-7 business days
2. Receiving Checklist
   • Inspect package for damage
   • Verify all components are returned
   • Check for repair documentation
3. Reinstallation Guide
   • Recommended first steps:
     1. Update to latest firmware
     2. Monitor closely for 24 hours
     3. Gradually increase workload

Warranty After Repair:

• 15-day warranty on repaired components
• Original warranty remains valid if unexpired

Pro Tip: Always maintain proper maintenance records and consider extended warranty options for high-value mining equipment.

Conclusion

Get the most out of your Antminer S21 XP with simple yet effective strategies for better performance, smoother maintenance, and longer hardware life. This guide helps you mine smarter—maximizing efficiency and returns without the hassle.

No more guesswork—discover easy, pro-level tweaks to keep your miner running at its best.

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