KASPA Fan Spoofers (Antminer KS3, KS5, IceRiver KS3M, KS5L)
KASPA Fan Spoofers (Antminer KS3, KS5, IceRiver KS3M, KS5L)
37 in stock
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A fan spoofer is a device that tricks your ASIC into thinking its cooling fans are spinning at the correct speed, allowing for the use of more efficient cooling methods without triggering safety shutdowns or error messages.
Great for keeping your warranty in good standing with Bitmain 👍🏻
Please note that you do not need spoofers if you are using 3rd party firmware such as BraiinsOS+, LuxOS, VNISH etc as they all have options to 'disable fans'; spoofers are only required if running stock Bitmain OS
We offer these in three options:
1️⃣ IceRiver 2in1 — these pesky manufacturers have their fan pins in weird spots, so you will need 2x of these as shown in the picture to connect to their respective control boards
2️⃣ Antminer KS3 — coverage for all four 4 Pin PWM fan headers on the Antminer KS3 control boards
3️⃣ Antminer 4in1 for KS5/Pro — tested and working with the Antminer KS5, the standard 4in1 spoofers (1️⃣ ) won't work after a recent firmware update from Bitmain.
Hardware includes 60 day warranty from date of shipment
Enjoy efficient and stress-free mining with our fan spoofers 👍🏻





Let customers speak for us
from 222 reviews
This system allows unrestricted airflow though the 8" Duct Fan while keeping all the dust and small flying critters out of my Hashboards. Stupid easy to install! Thanks Guys, for another brilliant product. Oh and LOVE those crazy stickers you include!!!

Placed my order, received a shipping confirmation quickly, spoofers arrived in excellent condition (packaged very well), plug in and play. Smooth Transaction. Thank you Nakamoto Mining!

awesome product

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Njord Board — ASIC Spoofer with Automated Fan Control

I love how the shrouds look. So many little details added to it and it fits well my inline fan. My only trouble is the spoofer, they dont work for my L9 with the Feb 2025 firmware.

Packaged great, some extras and excellent products.

Impression 3d propre et installation facile

Very happy with the shrouds

I wish the fan would automatically shut off when I turn my miner off but besides that it seems to work great

Njord Board — ASIC Spoofer with Automated Fan Control

Awesome shrouds :) Highly recommend

Loki delivers. Single board operation for the summer or power limited locations. Thanks Nakamoto Mining!

An excellent tool to reduce noise & increase cooling for a low cost per cooling unit. I have 3 miners all have the njord bords on them.