I-ROCKS KR-6820E-BK 104 Key USB/PS2 Wired Backlights Gaming Keyboard (Orange LED) - U.S. Patent No. 7388167 1-Year Mfg Warranty i-Rocks KR-6820E-BK I-ROCKS KR-6820E-BK 104 Key USB/PS2 Wired Backlights Gaming Keyboard (Orange LED) - U.S. Patent No. 7388167