Overview
The Sunon EE92251S3-D020-C99 is a compact axial case cooling fan designed for Dell desktop computers. Operating at 12VDC with low power consumption (1.26W), this 92×92×25mm unit delivers 37.5CFM of airflow through a brushless DC motor. The 3-pin connector includes tachometer support for RPM monitoring, making it suitable for system thermal management in tight chassis layouts.
Key Features
- Compact 92mm × 25mm form factor fits standard PC case mounting brackets
- Low-power 1.26W operation reduces electrical load and heat generation
- 3-pin connector with tachometer feedback for speed monitoring
- Brushless DC motor design for extended service life and quiet operation
- Cross-compatible with multiple Dell OEM part numbers (X755M, RKC55)
Technical Specifications
This unit is engineered to drop directly into Dell systems requiring rear chassis exhaust cooling with minimal airflow demands and low noise tolerances.
Typical Applications
- Rear case exhaust fan replacement for Dell Vostro 200, 400, 430, 460, 470 towers
- Cooling upgrade for Dell Inspiron 530, 531, 535, 537, 545, 546, 560, 570, 580 mini-towers
- Compatible with Studio XPS 8100, 8300, 8500, 8700 desktop systems
- General-purpose 12V DC chassis ventilation in compact enclosures
Compatibility & Replacements
Compatible With
- Dell Vostro 200, 400, 430, 460, 470 desktop towers
- Dell Inspiron 530, 531, 535, 537, 545, 546, 560, 570, 580 mini-towers
- Dell Studio XPS 8100, 8300, 8500, 8700 systems
- Any system with standard 92mm case fan mounting and 12VDC power supply
- 3-pin fan headers with tachometer support
Replaces / Drop-In Replacement For
- Dell OEM part number X755M-A01
- Dell OEM part number RKC55-A00
Works With
- Standard ATX/micro-ATX 12V system power rails
- BIOS/firmware fan speed monitoring (via tachometer on pin 3)
- Motherboard fan headers supporting 3-pin connectors
- Case fan extension cables and splitters rated for 12VDC

