It’s basically a cooling pad or stand — a platform on which you place your laptop — that incorporates one or more fans to blow air under (or around) the laptop, helping dissipate heat faster than passive cooling alone.
Specifications
Fits laptops roughly 12”–17” (so works with most standard notebooks).
• Fans: 4 × 70 × 70 × 10 mm fans.
• Rated Voltage: 5 V DC (i.e. powered from a USB port).
• Rated Current: 0.6 A total (≈0.15 A per fan) → Power consumption ≈ 3 W total.
• Fan Speed: ~2000 RPM.
• Noise Level: typically low, e.g. < ≈ 22 dBA.
• Build: Aluminum surface / frame, sometimes with non-slip pads to stabilize laptop.
• Adjustability / Fit: many are designed to support a range — often up to 15.6” or 17” laptops.
Other variations
• Some pads use a single large fan (instead of multiple small ones), with fan speeds e.g. 1000–1400 RPM, producing a quieter operation (good for office, study, etc.).
• Power and connectivity: almost always USB-powered (so you don’t need a separate power brick) — you plug into a laptop or power bank.
• Extra features: some include adjustable height/angle, foldable or portable design, rubber/ silicone non-slip pads, and even RGB lighting on gamer‑oriented models.
Performance effects
• The aluminum helps conduct and spread heat away from the laptop’s bottom.
• The fans increase airflow, which helps dissipate heat faster than passive cooling alone — useful when the laptop’s internal cooling is under heavy load (long sessions, gaming, video editing, high ambient temps).
• Models with multiple fans or larger fans tend to produce more airflow and better heat dissipation, but possibly at a cost of higher noise (though many aim to stay “quiet”).
