If you can"t connect the receiver to the mouse, pls restarded the pc, reinstalled the software, unistall all mouse drivers. Notes:compatible- There are 6 Models to choose from : G403 ,G603 ,G703 ,G900 ,G903 ,G pro Wireless Mouse Adapter Specifications: 100% brand original new and high quality. Color: Black Material: Plastic Quantity: 1PC Package includes: (Without retail package) 1 x Usb Receiver About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks comptiable with your cooperation and we'll make you feel satisfied.