Cooler Master - The brand new CK550 gives you a smoky gunmetal brushed aluminum top plate, mechanical switches and brilliant RGB backlighting. Thanks to its on-the-fly controls and software, the CK500 series
User manual Cooler Master CK550 (2 pages)
Cooler Master Ck550 V2 Gaming Mechanical Keyboard Red Switch With RGB Backlig... for sale online | eBay
Amazon.com: Cooler Master CK550 V2 Gaming Mechanical Keyboard Brown Switch with RGB Backlighting, On-The-Fly Controls, and Hybrid Key Rollover, Full : Electronics
Cooler Master CK530 & CK550 Review - There are better budget boards
Cooler Master CK550 RGB Wired Gaming Keyboard - US English Layout - Blue Switch
Refurbished: Cooler Master CK550 V2 Gaming Mechanical Keyboard Blue Switch with RGB Backlighting, On-the-Fly Controls, and Hybrid Key Rollover - Newegg.com