100% brand new and high quality Features: For Backup:Have it handy in case you need to replace the receiver that came with your Bolt wireless device. Multi-computer Use: Connect to two different computers with a strong, secure Bolt wireless connection on both devices. Use it with your Flow-enabled Bolt mouse for your multi-computer workflows. These are just a few reasons to buy a Bolt receiver. Discrete and Convenient:One port is all it takes. Once the receiver is plugged in, you can keep it installed. Take your laptop and connected Bolt devices with you to different workspaces and keep working. Easy Pairing:Pair it with Bolt wireless mice and keyboards4Requires Logitech Options software, available for download for Windows 10 or later, macOS 10.14 or later.. Simply visit logitech.com/options to download Logitech Options then follow step by step on-screen instructions. One Receiver 6 Devices:with a single Bolt receiver and forget the hassle of multiple USB receivers. Plus, keep one wireless keyboard/mouse set in each workspace, then simply move your laptop into range. No need to carry or commute with mice or keyboards. Specifications: Connect : wireless Interface: USB Wireless transmission frequency: 2.4GHz Whether to support ergonomics: support Size: approx. 18.4x14.4x6.6mm/7.24x5.67x2.60in Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1PC x USB Receiver