Amazon.com: Cooler MasterMechanical Gaming PC Keyboard : Video Games
User manual Cooler Master CK550 (English - 2 pages)
Amazon.com: Cooler Master CK550 V2 Gaming Mechanical Keyboard Brown Switch with RGB Backlighting, On-The-Fly Controls, and Hybrid Key Rollover, CK-550-GKTM1-US : Video Games