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Antminer S19k Pro units in two rows, dual cooling fans and control boards facing out.

Lot of 10 Used Bitmain Antminer S19k Pro 115TH/s Miners – Tested, Braiins OS, PSUs Included

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New Antminer Power Supply Cable for S17 S19 T17 | APW9 APW12 Compatible

$16.50
A black C13 power lead with a US three-prong wall plug, coiled on a white background.
The Loki PSS converter kit laid out: two purple circuit boards, a ribbon-cable harness with three black plugs, a jumper and spare header pins.

Loki Kit 240V to 110V Converter for Antminer S19 S21 | APW12 Compatible

Loki Kit 240V to 110V Antminer converter allows Antminer S19 and S21 miners to run on standard 120V outlets with proper firmware tuning.

  • 240V to 110V/120V conversion
  • Compatible with S19, S21, and APW12 PSU
  • Supports VNish and Braiins OS
  • Safe reduced-power mining setup

Ideal for running ASIC miners on household power.

Price:

$124.99

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Buying from ING Mining

  • Shipping$49.99 UPS GroundThe rate the checkout will charge on this item, read from the store’s own shipping settings rather than estimated. Ships from the US within 7 business days.
  • ConditionRepair part or bench toolThis shelf holds both new spares and as-is units, so read the condition stated in the description.
  • TestingAsk what this exact unit isThis shelf carries new sealed spares, opened stock, bench-tested units and untested ones. Ask before you pay and we will put in writing which of those this is; how we test, when we test, is published in full.
  • WarrantyStated per unit, not per storeAny term for this item is in the description above. Ask for the return terms on this exact unit before you pay — full terms are in the Shipping & buying tab below.
Questions+1 (781) 577-0377 or ns@ingmining.com — who we are

Sold by ING Mining LLC — ING MINING® is a registered U.S. trademark.

Live Chat
  • Condition graded per unit: new, tested working, refurbished or as-is
  • Warranty and returns stated per unit, not per store
  • Ships UPS Ground within 7 business days

Description

Loki Kit 240V to 110V Antminer is a power conversion solution designed to allow Antminer S19 and S21 series miners to operate on standard 110V/120V household outlets with proper configuration. With firmware power tuning and compatible power supplies, this kit enables safe and efficient reduced-wattage mining without requiring a 240V setup. —

Key Features

  • Converts 240V mining setup to 110V/120V operation
  • Designed for Antminer S19 and S21 series
  • Compatible with APW12 power supplies (100–240V)
  • Supports VNish, Braiins OS, LuxOS, and HiveOS
  • Stable and efficient low-power mining operation

—

Compatible Models

  • Antminer S19 / S19 Pro / S19j / S19 XP
  • Compatible with Xilinx, BeagleBone & ePIC UMC control boards

Note: Not compatible with noPIC (aluminum-backed) hashboards. —

120V Power Guidelines

When using the Loki Kit 240V to 110V Antminer, proper power management is required:

  • 120V 15A outlet: ~1400W safe continuous load
  • 120V 20A outlet: ~1900W safe continuous load

Important: You must reduce power in firmware. Do not attempt full 3000W operation on 120V. —

Installation Overview

  • Turn off and unplug the miner
  • Remove the stock 240V PSU
  • Install Loki Kit between control board and hashboard connections
  • Connect APW12 or compatible PSU
  • Plug into a dedicated 120V outlet
  • Use VNish or Braiins OS to set reduced wattage (start around 1000W)

—

Shipping

  • Brand new product
  • Ships within 1 business day
  • Secure packaging with tracking

—

Resources

Learn more about ASIC mining: Bitmain Official Website Understanding Bitcoin mining: Bitcoin Official Website —

Buy Miners

What’s in the box

  • 1 × Loki Kit 240V to 110V Converter
  • Power supply unit, as stated in this listing
  • Braiins OS, already installed and configured
  • Nothing that is not listed above. Cords, controllers, brackets and spares are only included when this listing names them — if you need to know before you pay, ask on +1 (781) 577-0377 or ns@ingmining.com and we will confirm in writing what is physically in the crate

Questions buyers ask about this part

Is this a complete, working machine?

No. This listing is on the parts and repair shelf, which holds both brand-new spares and bench tools and as-is units sold for repair. Which of those this one is, is stated in the description above — read it before you order, and ask us on +1 (781) 577-0377 or ns@ingmining.com if anything about compatibility with your fleet is unclear. We would rather answer the question than take a return.

What should I check the day it arrives?

Photograph the pallet or box before you open it, keep the packaging, and run the 48-hour acceptance test straight away. Freight claim windows are short, and a fault found on day two is a conversation while a fault found on day thirty is an argument. Our own six-step bench procedure is published in full, so you can repeat exactly what we did.

Shipping cost for this exact item, and how warranty and returns work here, are answered in the Shipping & buying tab on this page. Anything else, ask a person on +1 (781) 577-0377 or ns@ingmining.com — we would rather talk before you buy.

Related hardware and where this sits in the store

Parts, fixtures and tools that go with the same repair job:

Category: Need Parts.


A conversion kit changes the voltage you feed the machine, not the energy it demands. The parts guide is explicit about that, and about why no adapter creates a 110 V mode on a 220 V-class supply.




Where this listing sits

This one is on the parts and repair shelf. That shelf holds two different things: brand-new spares and bench tools, and as-is units sold for repair. Which of the two this listing is, is stated in its own description — read it before you order.

What our grades mean

These are the only words we use, and each one means a specific thing. They are not interchangeable and we do not soften them to move stock.

NewUnused stock. Factory sealed unless the listing says otherwise — “new, open box” means exactly that, and the listing will say it.
Tested workingSecond-hand, and it ran on our bench at the hashrate the listing states. We measured it; we are not repeating what the last owner told us. Expect cosmetic wear.
RefurbishedTested working, plus work done: cleaned, thermal paste and fans dealt with, failed components replaced. The listing says what was actually done to that unit rather than using the word as decoration.
As-is / for partsSold with no working claim at all, at a price that reflects it. Buy these to repair or to harvest. If a listing says as-is, assume it does not hash until you have proved otherwise.
UntestedWe have it, we have not powered it, and we are not going to pretend we did. Rarer than as-is and always stated explicitly.

What a grade here does not mean

  • Cosmetic wear is not a fault. Dust, scratches, scuffed labels and discoloured plastics are normal on hardware that has been earning. We photograph what we have; if the pictures matter to you, ask for more and we will take them.
  • A grade is not a warranty. Warranty terms are stated per listing, never per store — see the Shipping & buying tab. A tested-working grade describes what the machine did on our bench, not what we owe you in six months.
  • A boosted hashrate is not a spec. Where a unit ships on tuned firmware we say so and we give the factory figures too, because overclocking raises power faster than it raises hashrate — a tuned machine is less efficient per terahash than stock, not more.
  • We will not invent a grade to fill a field. If a unit came in without history and has not been through the bench, its listing says that.

How the grade gets decided

A used-hardware seller who will not tell you how they test is asking you to take the grade on trust. Ours is published: the six-step bench procedure every machine goes through, and the five measurements that get recorded — per-board hashrate, chip count, measured wall power rather than the nameplate figure, hardware error rate, and temperature under sustained load. When it reaches you, run the 48-hour acceptance test straight away, while the freight claim window is still open.

Buying second-hand for the first time? How to buy a used ASIC miner without getting burned is the long version, written from the repair bench rather than from a spec sheet.

Shipping

Shipping this item inside the United States costs $49.99 by UPS Ground — that is the rate the checkout will charge, read from the store’s own shipping settings, not an estimate. Orders ship within 7 business days.

Outside the United States the checkout quotes a flat international rate. On multi-unit or pallet orders, contact us before ordering so freight to your destination can be confirmed properly. What to check when the pallet arrives, and how a freight claim works, is covered in the mining hardware shipping guide.

What to do the day it arrives

Photograph the pallet or the box before you open it, and keep the packaging until you are satisfied. Freight claim windows are short, and damage found on day two is a conversation while damage found on day thirty is an argument.

Then run the 48-hour acceptance test straight away, while that window is still open. It is the same ground our own bench covers, so you can compare like for like: how the grade on this listing was arrived at, and the five measurements we record, are set out in the Condition & grading tab on this page.

Condition, warranty and returns

Condition: Repair part or bench tool — this shelf holds both new spares and as-is units, so read the condition stated in the description.

Warranty is stated per listing, not across the catalogue. Some units carry a manufacturer term and say so above, naming the term and the date it runs from. Many units, particularly used and AS-IS stock, carry none, and those listings do not claim one. There is no blanket warranty covering a catalogue that runs from sealed factory stock to a hashboard sold for parts. For what a mining warranty normally covers, see ASIC miner warranty explained.

Returns: ask for the terms on this unit before you pay. No single returns window is published for the whole store, because the sensible terms on a tested working machine and on a board sold AS-IS for parts are not the same terms. Email or call and ask what applies to this exact item — it is a two-minute conversation and a great deal cheaper than a dispute.

Who you are buying from

ING Mining LLC, Hanson, Massachusetts. ING MINING® is a registered U.S. trademark; our marketplace feedback is on the reviews page and the longer version of who we are is on about. Reach a person on +1 (781) 577-0377 or ns@ingmining.com.

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