Description
ARCTIC S40-28 15K PWM 40mm High Speed Server Fan
ACFAN00264A
The ARCTIC S4028-15K (ACFAN00264A) is a powerful 40 mm PWM cooling fan designed for environments where space is limited but airflow demands are strong — such as 1U server racks, network appliances, mini PCs, DVRs, NAS boxes, HTPCs, and compact enclosures. Despite its small footprint, the fan delivers impressive airflow and static pressure thanks to its ability to spin up to 15000 RPM under PWM control.
The fan’s dual ball bearing design ensures long service life and stable performance even under continuous 24/7 use, making it well suited for both professional and DIY cooling needs. A standard 4-pin PWM interface provides dynamic control, allowing the fan to run quietly at lower loads and ramp up when extra cooling is needed.
Why It’s a Great Choice
Incredible Speed for a 40 mm Fan: With a PWM-controlled speed range up to 15000 RPM, this fan delivers significantly more airflow and pressure than typical small fans — ideal for tight spaces needing strong air movement.
High Airflow & Static Pressure: With 32.67 m³/h airflow and 26.5 mm H₂O static pressure, it pushes air effectively through dense obstacles like heatsinks or restricted chassis vents — perfect for compact systems.
Durable Continuous Use: A dual ball bearing ensures longer life and dependable performance in applications such as servers or network equipment that run around the clock.
PWM Control for Balanced Cooling: The 4-pin PWM connector allows motherboard or controller-based speed regulation, delivering quiet operation at lower loads and powerful airflow when required.
Versatile Small-Form Applications: Sized for 40 mm fan slots, it’s an excellent choice for 1U server coolers, routers, switches, NAS systems, mini pcs, DVRs, and HTPCs — anywhere conventional fans don’t fit.
Long Warranty Confidence: Backed by ARCTIC’s 6-year warranty, giving peace of mind for long-term reliability in demanding environments.
Specifications:
| Specification | Details |
|---|---|
| Brand | ARCTIC |
| Model / SKU | S40-28 15K PWM (ACFAN00264A) |
| Fan Size | 40 × 40 × 28 mm |
| Speed Range | 1400 – 15000 RPM |
| Airflow | 32.67 m³/h (19.23 CFM) |
| Static Pressure | 26.5 mm H₂O |
| Bearing Type | Dual Ball Bearing |
| Connector | 4-Pin PWM |
| Cable Length | ~400 mm |
| Operating Voltage | 12 V DC |
| Rated Current | 0.47 A |
| Starting Voltage | 4.5 V DC |
| Colour | Black |
| Weight | ~42 g |
| Warranty | 6 Years |
| Use Case | Small enclosures, 1U servers, routers, NAS, mini PCs |




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