You might also be interested in these 40mm fan adapter.
Highly Speed PCIe4.0x8/x16 Adapter Card with 40mm Quiet Fan Supports 4X Solid Disc Up to 16000MB/s Theoretical Bandwidth NVMe Expansion Card
Kfwfuaee
£ 183.98
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Highly Speed PCIe4.0x8/x16 Adapter Card With 40mm Quiet Fan Supports 4x Solid Disc Up To 16000MB/s Theoretical Bandwidth Quads Channel Expansion Card
Features double height brackets (full/half height) for flexible servers/PC compatibility and active cooling with aluminum heatsinks plus a 40mm fan to maintain solid disc stability during intensive workloads
£ 185.99
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Noctua NF-A4x20 FLX, High-Performance Quiet Fan 40mm | High Airflow, Low Noise, 20mm Thick, for PC and Electronics Cooling, 3 Speed Settings 5000/4400/3700rpm 3-Pin
Noctua
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Kaneorooir FFB0412SHN 4028 40MM 40X40X28MM Server Fan Big Power Cooling Fan 12V 0.45A -Violent Air Flow Fan 4Pin Connector
Rated voltage: DC12V
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350W 220V Power Supply for NAS and POS Machine with 40mm Intelligent Temperature Control Fan Power Supply
350W 220V power supply, to efficiently power NAS and POS with a small size of 150x83 40mm
£ 47.99
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Small 1U Modulars Power Supply Unit Low Noise 40MM Fan With Thermals Control 250W 300W 700W 850W Modulars Power Unit
SELVFZ
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AABCOOLING Super Silent Fan 25 - Silent and Efficient 218mm Fan with 4 Anti-vibration Pads
AABCOOLING
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MF40102VX-Q00U-A9D DC24V 1.44W 40MM Magnetic levitation bearing copier UPS power supply fan
Rated voltage: DC24V.Power consumption:1.44W.
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KESOTO 40mm Mount Replacement Parts Mounting Adapters Components Heatsink Plug for
Effectively improve dissipation effect. for more powerful performance.
£ 14.69
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GMBYLBY Small 1U Modulars Power Supply Unit Low Noise 40MM Fan With Thermals Control 250W 300W 700W 850W
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IBM 43V6928 Fan 40mm hot-swap **New Retail** - ( > Options > Power Supply)
43V6928
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TEMOOUES 300W Module Small 1U Power Supply Featuring 40MM Low Noise Fan for Quiet Computer Environment Long Service Fully Module Power Supply
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GeeekPi Raspberry Pi 4 ABS Case with PWM Fan, 4PCS Heatsinks and 5V 3.6A USB-C Power Supply UK Power Adapter for Raspberry Pi 4 Model B
