Fan Corsair RS120 12 cm Black 420-2100 RPM 0.2-4.15 mmH2O

The Corsair RS120 is a 120 mm case fan engineered for efficient radiator and chassis cooling. It connects directly to a motherboard PWM header via a single 4‑pin connector, supports PWM speed control and Zero RPM operation, and is finished in black. The fan operates from 420 to 2100 RPM with airflow and static pressure characteristics suitable for both case airflow and radiator use.

Advantages

Direct-to-motherboard daisy-chain capability reduces cable clutter by allowing multiple RS series fans to be controlled from one 4‑pin PWM header. The blade geometry — including optimized angle of attack, airfoil profile and edge curvature — and an expanded blade radius inside the housing increase airflow efficiency. Angled stator vanes (Corsair AirGuide) focus exhaust airflow to improve radiator fin coverage and heat dissipation. A magnetic dome bearing reduces friction and mechanical noise while improving longevity. PWM control and Zero RPM support enable quiet operation under light loads.

Suitable for

• Case cooling in mid‑tower and full‑tower PC builds
• Radiator fans for AIO liquid cooling and custom loops
• Multi‑fan setups using a single motherboard PWM header

Key specifications

• Type: Fan
• Fan diameter: 120 mm
• Operating speed: 420–2100 RPM
• Static pressure range: 0.2–4.15 mmH2O
• Connector: 4‑pin PWM (direct to motherboard, daisy‑chain capable)
• Colour: Black

How to use

Install the RS120 into a standard 120 mm fan mount in your case or onto a radiator using the supplied screws. Connect the first fan in the chain to a motherboard 4‑pin PWM header; subsequent RS series fans can be daisy‑chained in sequence so they are all controlled from that same header. Configure fan speed and Zero RPM behavior in your motherboard BIOS or fan control software to match desired cooling and acoustics.

Recommendations

For best radiator performance, position the RS120 so the focused exhaust airflow aligns with the radiator fins. Use PWM fan curves to balance noise and cooling; enable Zero RPM at low system loads to eliminate fan noise when full airflow is not needed.