Thermaltake Massive23 ST 23CM Fan Notebook Cooler- CLN0009. Oversized definitely quiet 230mm Blue LED fan accelerates airflow to improve overall heat dissipation. Built-in Blue LED On/Off switch to easily adapt to different working or gaming environment. Ultra-lightweight ABS Plastic material combines with black metal mesh stylish design. USB powered cable eliminates bulky AC power adapter. Supports laptop size from 10- 17, especially for wide-screen laptop.