Logitech Bolt, Unifying or Bluetooth? Check before replacing a receiver

Quick answer

A Logitech receiver must match the wireless technology supported by your keyboard or mouse. Logi Bolt and Logitech Unifying are not interchangeable. A tiny USB receiver is not automatically Unifying, and a product described as “2.4GHz” does not establish which receiver it accepts.

Before spending anything, check the exact device model, its logo and its support page. If the device also supports Bluetooth, that may provide a connection without its USB receiver. Bluetooth support must be confirmed for the device, not assumed from the brand.

Separate the four connection descriptions

Logitech describes Bolt as based on Bluetooth Low Energy technology and Unifying as its own 2.4GHz wireless technology. The practical buying rule is simpler than the radio terminology: use the supported family named for the exact peripheral.

If the original receiver is missing

Look for a model number on the underside of the keyboard or mouse, its battery compartment or its packaging. Record it exactly. Check whether the receiver is stored in a compartment in the device before ordering a replacement.

Find the manufacturer's page for that model and check its connection options. If it explicitly supports Unifying, a compatible Unifying replacement may be an option. If it supports Bolt, follow the Bolt route. If neither is stated, ask for a model-specific replacement rather than buying a receiver on appearance.

Logitech's current Unifying guidance uses Logi Options+ for supported devices and says its older standalone Unifying software is no longer maintained. Obtain pairing software through Logitech's own support pages. Do not download an unofficial driver bundle because a marketplace listing links to it.

When you are choosing a new keyboard instead

Choose the connection around the computer you will use. A Bluetooth-capable host may let you avoid occupying a USB port. If you prefer a supplied receiver, check that the host has the right physical USB connection and that its operating system is supported. A USB adapter changes the plug, not Bolt/Unifying pairing compatibility.

For a keyboard with two documented connection choices, compare the Logitech K650 Bluetooth and Bolt keyboard at Buy2Fix. Logitech confirms Bluetooth Low Energy and an included Bolt USB receiver for the K650. Check the listing's layout, supplied items and your operating system before ordering. It is a new-keyboard option, not a replacement receiver for an existing Unifying keyboard.

If you are comparing a compact keyboard-and-mouse package, the MK245 Nano set is a different listed option. Its “Nano” description does not prove compatibility with either Bolt or Unifying. Confirm the package's supplied receiver and exact replacement route rather than combining parts from different sets.

Receiver matching card

• Peripheral model and any regional suffix: ______
• Wireless family stated by the manufacturer: ______
• Logo on the peripheral and proposed receiver: ______
• Computer operating system and available USB connection: ______
• Bluetooth fallback explicitly supported: yes / no / unknown
• Official pairing instructions located: ______

Decision: buy a receiver only when the model and family match. If the device already works over supported Bluetooth, a receiver purchase may be unnecessary. If compatibility remains unknown, keep the device and ask the manufacturer before replacing the whole set.

Does connecting several devices change the rule?

A Unifying receiver can connect up to six compatible Logitech peripherals, but the word “compatible” still matters. It does not turn six unrelated wireless devices into one supported group. Check each device separately.

Sources and scope

This guide uses the manufacturer documentation and product listings linked below, checked on 3 November 2026. It is a buying and compatibility guide, not a hands-on product test. Prices, availability and supplied accessories should be checked on the current listing before ordering.

• Logitech: Bolt versus Unifying
• Logitech: identify your wireless technology
• Logitech: Unifying setup and current software guidance
• Logitech: Signature K650 connection choices