1,APPLICABLE MODEL: USB mouse receiver fits for Logitech G603 wireless mouse, perfect replacement. 2,4G TECHNOLOGY: Replacement USB receiver adopts wireless 4G technology, stable transmission signal. 3,PLUG AND PLAY: Tested, more stable and safe to use, plug and play, no need to install drivers, easy to operate. 4,STABLE PERFORMANCE: Replacement for broken, damaged, cracked, unusable mouse receiver, stable working. 5,LIGHTWEIGHT AND PORTABLE: USB dongle mouse receiver adapter is small in size and light in weight, easy to carry and store. 1 x Replacement USB Receiver Item Type: Replacement USB ReceiverMaterial: ABSInterface: USBConnection: 2.4 WirelessApplicable Models: for Logitech G603 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.