RAPOO V2M V+Wireless Gaming Mouse Receiver(4K Type) Applicable model_ VT9/VT9S/VT950PRO/VT960PRO/VT9PRO Rapoo 4K radio race gaming technology/NXP chip/ Firmware upgradable Supports 4KHz/2KHz/1KHz Polling Rate Supports 0.25ms, 0.5ms, and 1ms RGB Indicator light know the mouse real-time power state and code matching Enjoy Wireless 2.4G It compatible with VT9S、VT3S、VT9、VT960PRO、VT950PRO