Equipped with Cherry MX Blue switches, the MasterKeys Pro L Mechanical Keyboard with Intelligent RGB Backlighting from Cooler Master connects to your system using a 4.9' detachable micro-USB 2.0 cable. It features an RGB LED backlight that supports 16.7 million colors, a 72 MHz ARM Cortex M3 32-bit processor, 512kB of built-in memory, on-the-fly recording for programmable macros and lighting, a polling rate of 1000 Hz, a repeat rate of 1, 2, 4, and 8x, and a response rate of 1 ms.; Features: Wired Detachable Micro-USB Connection ; Cherry MX Blue Switches ; RGB LED Backlight (16.7 Million Colors) ; On-the-Fly Macro Key/Lighting Recording ; Polling Rate: 1000 Hz ; Repeat Rate: 1x / 2x / 4x / 8x ; Response Rate: 1 ms ; 72 MHz ARM Cortex M3 32-Bit CPU ; 512kB On-Board Memory;