If you lost your Logitech USB receiver, the first thing to do is check whether your device uses a Unifying receiver or a dedicated non-Unifying receiver. Look for the orange asterisk logo on the device itself or on the original receiver; this small mark determines which replacement path you need to follow.
What to do if you lost your Logitech USB receiver: An immediate, concise introduction stating the two main paths
Losing the small USB receiver for your Logitech mouse or keyboard is frustrating, but you have two clear paths forward. If your device is compatible with a Unifying receiver, you can buy a single replacement that pairs with multiple Logitech devices. If your device uses a non-Unifying receiver, you will need to purchase a dedicated replacement specific to that model. Before anything else, confirm which type you need by checking for the Unifying logo.
Step 1: Identify your Logitech receiver type
Flip your Logitech mouse or keyboard over and look for the orange asterisk symbol, which is the Unifying logo. If you see this logo on the device, it is compatible with Logitech's Unifying receivers. If there is no Unifying logo, your device uses a dedicated receiver that is not interchangeable with other Logitech receivers. This distinction is critical because it dictates whether you can use a universal replacement or must find a model-specific part.
Step 2: Get a replacement receiver
Once you know your receiver type, visit Logitech's official website or an authorized retailer to purchase the correct replacement. For Unifying-compatible devices, buy a Logitech Unifying receiver. For non-Unifying devices, search for the specific receiver model that matches your device's part number. If your device is still under warranty, contact Logitech support; they may provide a replacement at no cost. When purchasing, ensure the receiver is genuine to avoid compatibility issues.
Step 3: Pair your device with the new receiver
After obtaining the replacement receiver, you need to connect it to your Logitech device. The process requires you to install Logitech Unifying Software on your computer. This software is essential for pairing the receiver with your device. Once installed, insert the new receiver into a USB port, launch the software, and follow the on-screen prompts to sync Logitech mouse to new receiver. The software will detect your device and complete the connection. If you are setting up a Logitech mouse for the first time with this receiver, the same software guides you through the entire pairing process.
What if my device doesn't use a Unifying receiver?
For older Logitech devices or gaming peripherals that lack the Unifying logo, you cannot use a standard Unifying receiver. Instead, you must obtain a dedicated replacement receiver designed specifically for that model. Logitech provides software tools on its support site that can help pair a non-Unifying device with its correct replacement receiver. Download this utility from Logitech's support site, insert the new receiver, and run the tool to establish the connection. This software is the only reliable way to sync non-Unifying devices to a new receiver.
Connect without a USB receiver as a last resort
If you cannot find or purchase a replacement receiver, check whether your Logitech device supports Bluetooth. Many newer Logitech mice and keyboards include Bluetooth as an alternative connectivity option. If your device has Bluetooth, you can connect Logitech mouse without USB by enabling Bluetooth on your computer and putting the device into pairing mode. This method bypasses the need for any USB receiver entirely. For full instructions on this process, refer to the dedicated guide on how to connect Logitech mouse without USB.
