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.