Q&AQ1. I ordered wireless USB mouse, But I can not see the USB in my package ?A1. The USB receiver is at the bottom of the mouse. You could see our instruction map.Q2. Bluetooth Mouse only have Bluetooth ? Can I use USB receiver?A2. Dual mode version is Bluetooth + 2.4G USB Adapter, If your device has Bluetooth function, you can use the Bluetooth mode of the mouse. If your device has only a USB interface and no Bluetooth function, please use the mouse's wireless 2.4G mode, and you can use it after you plug in the adapterQ3. Why the cursor can't locate accurate ?A3. When the mouse cursor can't locate accurate, the mouse need to be charged Or replace the USB port to insert the wireless receiver2.4GHz Rechargeable Wireless TransmissionAn experience that is safer and more accurate than a traditional USB mouse with an increased working distance of up to 15 meters which can enables fast data transmission without delays or dropoutsDual Mode Bluetooth Mouse(BT 5.1 + 2.4GHz)Dual mode wireless mouse realizes free switches between two devices with one mouse only by simply toggle switching.It can connecting one device through Bluetooth and the other through 2.4GHz USB Receiver. Note: You can't use Bluetooth mode and 2.4G mode at the same time.Mute Click & 3 Adjustable DPISilent button reduces 90% noises, which makes it an ideal wireless mouse for office, conference room, cafe, library, bedroom, help you concentrate on your work, study without disturbing others besides you. 3 adjustable DPI level ( 800, 1200, 1600) to change the speed and sensitivity of your laptop mouse cursor freely.Ergonomic DesignIt's contoured shape and comfortable materials ensure maximum comfort during those long gaming sessions, long-term use without fatigue. In additionwith advanced sensor to keep your mouse silent, provides you an extremely quiet environment at Office or Home. No need for a driver, Plug and Play! Innovative one-key return to desktop function, just one click, hide the window, refuse to peek, guard privacyExtensive CompatibilityCompatible with more than 99% Bluetooth devices including ipad, iphone, Laptop, MacBook Pro Air, Tablet, Mac, PC etc. It supports ipad OS/iOS 13 or above, Windows 10, Mac OS X, Linux, Android systems.Package List1 X Dual Mode Mouse1 X User Manual1 X Charging Cable