This adapter replaces the loud stock fans on the intake side of your miner. An external inline fan plugs directly into the adapter opening and pushes fresh air into the miner — significantly quieter than the original fans.
At a Glance
Contents: 1× intake adapter, 1× screw set (8 screws)
Sizes: Available in 8 inch (200mm) or 10 inch (250mm)
Use case: Intake side — remove stock fans, mount adapter, plug in inline fan
Installation: Remove stock fans and fan grille, place adapter, secure with 8 screws
Additionally required: Inline fan (matching diameter), fan spoofer
How External Cooling Works
The stock fans of an ASIC miner produce most of the noise. With external cooling, you remove these fans entirely and mount this adapter on the intake side. A quiet inline fan plugs directly into the round adapter opening and pushes fresh air through the miner. Optionally, you can attach a duct hose to the fan to draw air from outside. On the exhaust side, we recommend a fan shroud to duct the hot exhaust air away through a hose.
8 Inch or 10 Inch?
8 inch (200mm) is the standard size and fits most inline fans.
10 inch (250mm) significantly reduces backpressure — the fan can spin slower and quieter while delivering the same airflow. Recommended for maximum noise reduction.
Compatible Miners
Fits all Antminer models with 2× 120mm fans: S21, S19, S19 Pro, S19k Pro, S19 XP, S19j, S19j Pro, S19a, S19a Pro.
Not compatible with S21+, S21 Pro, S21 XP (different fan size, 140mm) — find the matching adapter here.
Material and Quality
Made from PETG — heat-resistant, durable, and printed as solid material. Designed and manufactured in Germany.
Frequently Asked Questions
Do I need a fan spoofer?
Yes. When you remove the stock fans, the miner reports a fan error and throttles or stops. A fan spoofer emulates the PWM signal of the removed fans so the miner continues to run normally.
What do I need for the exhaust side?
On the exhaust side, we recommend a fan shroud in a matching size. This lets you duct the hot exhaust air through a hose to the outside or into another room.
Which inline fan do I need?
A duct fan with matching diameter (200mm for 8 inch, 250mm for 10 inch) that plugs directly into the adapter opening. The airflow capacity should at least match the original miner fans.
Can I use this adapter on the exhaust side?
Yes. Mounted on the exhaust side, the inline fan pulls the hot air out of the miner and ducts it away. The intake side stays open — you can mount a dust filter there, for example. Both configurations work, the setup is flexible.
Product safety information
Manufacturer information:
Shortfiat UG (haftungsbeschränkt)
Blankenauer Str. 61
Chemnitz, Deutschland, 09113
gpsr@shortfiat.de