OEM Industries FD124028EB-P 40mm 28mm 12V .78A CPU cooler

Compact 40 mm Server Fan

This 40 mm by 28 mm axial fan is built for 1U server chassis where vertical space is measured in millimetres. It runs on 12 V and draws .78 A, delivering focused airflow directly over low-profile CPU heatsinks. The black frame and ball-bearing motor suit continuous operation in rack-mounted equipment. System integrators maintaining dense compute nodes will find the form factor matches legacy 1U layouts.

12 V .78 A Power Draw

The single decisive figure is the 12 V .78 A rating, which determines whether the fan can be powered from a standard motherboard header or requires a dedicated supply rail. At .78 A the current exceeds many 3-pin header limits, so verify the board's per-header budget before connecting. No PWM or tachometer wire is present, so speed control and monitoring are not available through the two-wire lead.

Two-Wire Ball-Bearing Install

Installation is a four-screw mount into the standard 40 mm hole pattern found on most 1U heatsinks. The ball bearing reduces start-up friction but transmits more vibration than sleeve types; use the supplied rubber grommets if resonance appears. The bare two-wire lead has no keyed connector, so polarity must be observed manually — reverse wiring will stall the motor. No LED or extra wiring simplifies cable routing in tight trays.