By Bestbuy.com

Lian-Li - UNI Fan SL Infinity Wireless 120 Triple Pack 2.4 GHz Wireless Signal ARGB Fan (12SLIN1W3B) - Black

The Controller is required to operate the SL-INFINITY wireless fan & Strimer; the single pack does NOT include a controller and must be purchased separately. If you have a controller from the UNI FAN Triple Pack, and PW24-1W-T, you can use that. 3-Pack & PW24-1W-T including a controller. The 3-Pack package also includes a PWM 1 to 3 cable