Description
The Bitaxe 40W 5V 8A Power Supply delivers regulated 5.0V DC at up to 8A through a 5.5 × 2.1 mm center-positive right-angle barrel plug. It works with Bitaxe and Nerdaxe miners that require 5V DC and use the matching connector and polarity.
Compared with a 5V 6A 30W adapter, this supply provides 2A and 10W of additional rated capacity, which provides 33% more current and power headroom. The miner draws the current it needs; an 8A rating does not force 8A into the device. The added capacity can help reduce voltage sag and avoid operating a smaller supply at its limit, especially when tuning a supported miner.
Bitaxe 40W 5V 8A Power Supply Specifications
| Specification | Details |
|---|---|
| Output voltage | 5.0V DC regulated |
| Maximum output current | 8.0A |
| Maximum rated power | 40W |
| AC input | 100–240V AC, 50/60Hz, 1.2A maximum |
| DC connector | 5.5 × 2.1 mm right-angle barrel plug |
| Polarity | Center positive |
| Regional plug heads | North America, EU, UK, and Australia |
| Protections | Over-current, over-voltage, and short-circuit protection |
| Efficiency | US DoE Level VI |
| Model | XSI-0508000DEX |
More Headroom Than a 5V 6A Supply
| Specification | 5V 6A Supply | 5V 8A Supply |
|---|---|---|
| Maximum current | 6A | 8A |
| Maximum rated power | 30W | 40W |
| Additional capacity | Baseline | +2A / +10W / 33% |
| Typical use | Stock operation on compatible hardware | Stock operation with additional power headroom or carefully monitored tuning |
Power-supply headroom does not guarantee a higher overclock, lower temperature, or better ASIC. Stable tuning also depends on cooling, wiring, firmware settings, ambient conditions, and the individual miner.
Compatible Bitcoin Miners
This 40W adapter is intended for miners that require regulated 5V DC through a 5.5 × 2.1 mm center-positive barrel input and remain within its 8A/40W output rating. The following Solo Satoshi listings meet those requirements:
| Compatible miner | Power notes |
|---|---|
| Bitaxe Gamma 602 | Single BM1370; approximately 18–20W stock operation. |
| Bitaxe Gamma Duo 650 | Dual BM1370; approximately 25.8W stock operation and compatible with the 40W supply. |
| Nerdaxe Gamma v2.3 | Single BM1370; official project specifies 5V, 5A minimum, and more than 25W. |
| Bitaxe Supra | Legacy single-chip 5V barrel-input model; current listing may be out of stock. |
The same electrical format is also used by legacy single-chip Bitaxe Max and Ultra boards, but hardware revisions and third-party builds vary. Confirm the label or documentation for the exact board before connecting power.
Not compatible: Do not use this 5V adapter with the 12V XT30 Bitaxe GT, Bitaxe Touch, NerdQaxe++, Naja Duo, Gamma Hex, BitForge Nano, or any USB-C, XT30, XT60, six-pin, 12V, or reversed-polarity input.
Four Interchangeable Regional Plug Heads
The adapter includes North America, European Union, United Kingdom, and Australian plug heads. Select the head that matches the wall outlet, lock it fully into the adapter, and confirm the AC input range is appropriate for the local supply.
Setup and Safety
- Confirm the miner is marked for 5V DC input.
- Confirm a 5.5 × 2.1 mm center-positive barrel connection.
- Install the correct regional AC plug head securely.
- Connect the right-angle DC plug to the powered-off miner.
- Connect the adapter to AC power, start the miner, and review input voltage and temperature in AxeOS.
Do not cover the adapter or place it against hot miner exhaust. Stop using it if the cable, case, plug head, or connector is damaged, loose, discolored, or unusually hot.
What’s in the Box
- 1 × Bitaxe 40W 5V 8A power supply with attached right-angle DC cable
- 1 × North America plug head
- 1 × European Union plug head
- 1 × United Kingdom plug head
- 1 × Australian plug head
Why Buy Your Bitaxe Power Supply From Solo Satoshi?
- Clear compatibility: Voltage, connector, polarity, and exclusions are stated plainly.
- Useful headroom: 40W rated capacity provides 10W more than a standard 30W adapter.
- Worldwide plug support: Four interchangeable regional heads are included.
- US-based inventory: In-stock orders ship from Conroe, Texas.
Warranty & Returns
Solo Satoshi provides a 2-year limited warranty from delivery and handles warranty claims. See our Return & Warranty Policy for details.
Eligible unused items may be returned within 14 days of the order date, subject to the conditions and fees in our Return & Warranty Policy.
Helpful Guides
The 80% Rule for Home Mining
Understand continuous-load headroom and why a power supply should not be run at its limit.
Bitaxe Overclocking Guide
Learn how frequency, core voltage, cooling, power delivery, and silicon variation affect tuning.
AxeOS Guide
Monitor input voltage, power, temperature, hashrate, efficiency, pools, and firmware.
Bitcoin Miner Power Supply Guide
Review voltage, current, connector, polarity, efficiency, and safe power-sizing fundamentals.
Which Bitaxe and Nerdaxe miners work with this 40W power supply?
Does this power supply work with every Bitaxe or Nerdaxe?
What does 40W of power headroom mean?
Will an 8A supply force too much current into my miner?
Does the 40W supply guarantee a higher Bitaxe overclock?
Can I use this power supply with a 12V miner?
What barrel connector does this adapter use?
Which regional plug heads are included?
Does the power supply accept international AC voltage?
What protection features are included?
Can one adapter power multiple miners?
How do I confirm compatibility before connecting it?
What is included with the Bitaxe 40W power supply?
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