CPU Cooling Fan Replacement for Dell Inspiron All-in-One 22 3275 3277 3280 / 24 3475 3477 3480 5400 5401 5490 5491 / 27 7700 7790 7791 AIO PC Cooler

This brand new AIO CPU cooling fan is a dedicated aftermarket replacement cooling part for Dell Inspiron series all-in-one desktops, covering 22-inch, 24-inch and 27-inch mainstream AIO models including 3275, 3277, 3280, 3475, 3477, 3480, 5400, 5401, 5490, 5491, 7700, 7790 and 7791.

Equipped with standard 4-wire PWM plug, it works perfectly with Dell AIO motherboard built-in thermal management system to dynamically adjust fan rotation speed according to CPU workload. Custom thin turbine blower blades adapt to the limited internal space of integrated all-in-one machines, output stable concentrated airflow to quickly discharge CPU accumulated heat.

It effectively fixes common fan faults such as loud rattling buzzing noise, continuous high-temperature prompts, system slowdown and unexpected automatic shutdown caused by aging or blocked original cooling fans. Built-in anti-vibration foam structure greatly reduces vibration noise during long-hour video playback, document editing and online meetings.

Every cooling fan passes strict airflow, voltage and durability quality inspection before delivery. The fan housing outline, screw hole positions and cable length are fully consistent with the original factory fan, no chassis modification or wire cutting required for simple self-repair or professional maintenance. It is an economical cooling spare part to restore stable heat dissipation performance of Dell Inspiron all-in-one home and business computers.