ELUTENG Mini 40mm 5V USB Fan Desk PC Fans with L/M/H 3 Adjustable Speed Portable USB Computer Fan USB Case Box Electronic Cooling Fan 5300 RPM with Metal Grill for Laptop/TV Box/AV
Noctua NF-A4x10 PWM 5v 40mm x 10mm Low Noise PC Case Fan 5000 RPM 19.6 dBA | eBay
Evercool 40mm 4cm 40 x 40 x 20mm 3 Pin 12 Volt PC Case Fan (H) - Shiny Hardware
40mm Cooling Fan, 5V - Unmanned Tech Shop
Noiseblocker BlackSilent Fan XM1 Fan - 40mm (2800rpm) | OcUK
AABCOOLING Super Silent Fan 4 - Silent and Efficient 40mm Fan with 4 Anti-vibration Pads, 12V Fan, PC Cooling, 3D Printer Fan, 4cm Fan 17.9 dB(A), 4.9 CFM, 4500 RPM : Amazon.co.uk:
Arctic 40mm S4028-15K Airflow/Pressure Optimised Fan LN126094 - ACFAN00264A | SCAN UK
4010 Fan 40MM 40*40*10MM Computer Fan Cooling Fan DC5V 2Pin 3Pin YIUK | eBay
40mm 12V DC Thin Fan | Jaycar Electronics
AABCOOLING Fan 4 - Economy Series 40mm Case Fan, Cooling Fan, Computer Fan, PC Fan, 3D Printer Fan, 4cm Fan, Mini Fans Cooling, 20 dB(A), 3.4 CFM, 3200 RPM : Amazon.co.uk: Computers & Accessories
40mm Cooling Fan & Heatsink Set for Raspberry Pi 5 | The Pi Hut
PC Case Cooling Fan 40mm x 40mm x 10mm 12V 0.12A Sleeve Bearing 10cm : Amazon.co.uk: Computers & Accessories
40mm x 40mm Brushless DC Fan
12v Dc 40mm 20mm 2 Wire Computer Pc Cpu Cooling Case Fan | Fruugo UK
Noctua presents NF-A4x10 24V PWM 40mm fan
Silverstone FTF 4010 PWM fan - 40mm [LUSV-087] from WatercoolingUK
Noctua NF-A4x10 FLX 40mm 12V 4010 Silent Hotend Part Cooling Fan
FD-FAN-SSR3-40-WT Fractal Design Silent Series R3 40mm, Fan, 4 cm, 4000 RPM, 20 dB, 3.6 cfm, Black, White
Ever wondered how tiny a 40mm fan is? (140mm fan for scale) : r/pcmasterrace
40mm Silent Series Cooling Fan
Small PC computer cooling fan 40mm 5v 2 pin | eBay
40mm Noctua NF-A4x20 FLX Fan LN82071 | SCAN UK
GDSTIME 40mm Fan, 12V 3Pin Fan, 40mm x 40mm x 20mm 4020 0.1A Brushless CPU Cooler : Amazon.co.uk: Computers & Accessories