You cannot pair an HP mouse fob to a Logitech mouse, because HP receivers only accept the HP mouse they shipped with, and Logitech mice only connect to Logitech Unifying, Logi Bolt, or Lightspeed receivers using matching firmware and a shared device identifier. Cross-brand pairing fails at the radio-protocol level before any software setting matters. The practical workaround is to pair each device with its own brand's receiver or use Bluetooth or a wired connection. This guide explains the mechanism, the edge cases people hit, and the exact steps to get both mice working on one computer.
The mechanism: why a fob and a mouse are a matched pair
A wireless mouse and its USB fob form a closed radio system, not a generic radio link. The fob is a small 2.4 GHz transceiver that carries a factory-set identity, and the mouse carries the matching identity in its own firmware. When you press a button, the mouse transmits a tiny data packet on one of many channels in the 2.4–2.4835 GHz band. The packet includes a device address or pairing key that the receiver checks before it forwards anything to the computer.
This is not the same as Bluetooth, which uses open discovery and a standard pairing handshake. Proprietary 2.4 GHz links are deliberately opaque. The manufacturer controls which devices talk to which receiver, often to keep latency low and to stop one office's mice from hitting another office's receivers. Insert an HP fob and a Logitech mouse into the same machine and each device simply ignores the other. The mouse broadcasts; the fob hears nothing it recognizes and stays silent.
There is a second layer: the USB interface itself. A proprietary receiver presents to the operating system as a USB human interface device, usually a keyboard-and-mouse composite. That interface only enumerates the devices the receiver's firmware is told to expose. Even a theoretically compatible radio packet would be discarded because the receiver never reports it as an input device. This is why no amount of driver installation, device manager tinkering, or third-party "re-pairing" tool fixes a brand mismatch. The lock is in firmware, not in Windows.
Quantified context: how tight the pairing actually is
The 2.4 GHz band these devices share spans about 83.5 MHz in the US, from 2.4000 to 2.4835 GHz. Within that band, a receiver and mouse negotiate a channel and a hopping pattern, and the receiver filters every packet by a stored device identifier before passing it to the host. Logitech's Unifying system allows up to six compatible devices per receiver, and its software can pair additional Logitech devices to an existing Unifying receiver because both ends speak the same Logitech protocol. HP's receivers use HP's own scheme with its own identifiers and no public pairing utility for foreign devices. The compatibility boundary is brand and often product line, not the radio band.
Latency figures illustrate why vendors guard the link. Proprietary 2.4 GHz mice typically report at 1,000 Hz on a wired or high-end wireless connection, with click-to-display latency in the low single-digit milliseconds for gaming models; office-grade wireless mice often report at 125 Hz, roughly an 8 ms polling interval. A receiver will not accept a transmitter it cannot authenticate, so those timing guarantees are enforced by the closed pair. Bluetooth mice add their own connection overhead and reconnection behavior. None of these numbers change the pairing rule, but they explain why the ecosystem is closed.
Edge cases worth knowing
The most common false hope is the "universal receiver" idea. Logitech sells Unifying and Logi Bolt receivers as multi-device hubs, and they genuinely accept multiple Logitech devices. They do not accept HP devices. HP sells some multi-device receivers for its own product families, and the same brand boundary applies. The receiver is a brand hub, not a universal adapter.
Another edge case is a mouse that supports both a proprietary dongle and Bluetooth. If your Logitech mouse has Bluetooth, you can often pair it directly to the computer and leave the HP fob for the HP mouse. Check the mouse's underside or documentation for a Bluetooth pairing button. Many modern Logitech mice, including several in the M and MX lines, support Bluetooth in addition to their own receiver. HP mice increasingly do the same.
A third case is a lost or broken fob. Replacement fobs are brand- and model-specific. A Logitech Unifying receiver can often be re-paired to a compatible Logitech mouse using Logitech Options or the Unifying software, but only if the mouse is a Unifying-compatible model and you have the right receiver generation. HP replacement receivers must match the HP mouse model family; HP support can confirm the correct part. A mismatched receiver of the same brand can still fail, which is why model numbers matter more than brand alone.
Misconceptions that waste time
The first misconception is that any USB receiver works with any wireless mouse. It does not. The receiver and mouse share a factory identity, and cross-brand or cross-model pairing usually fails silently.
The second is that operating-system pairing tools can bridge the gap. Windows, macOS, and Linux expose the receiver as a finished input device. They do not offer a way to teach a foreign receiver a new device identity, and no mainstream OS ships a tool that does.
The third is that a driver update fixes a brand mismatch. Drivers describe how the computer talks to the receiver. They cannot change what the receiver's firmware accepts over the air.
The fourth is that buying a cheap "universal 2.4 GHz receiver" solves the problem. Generic receivers generally pair only with the generic mice sold alongside them, and they rarely interoperate with branded devices. The specifications rarely promise cross-brand support because it does not exist.
The fifth is that two mice on one computer will conflict. They will not, as long as each has its own working connection. Two receivers occupy two USB ports, and the operating system treats them as two independent pointing devices. You can move one cursor with either mouse; the computer does not care which brand sent the movement.
Practical actions that actually work
The reliable path is one connection per mouse. Use each mouse with its own brand's receiver, or use Bluetooth where supported. If you want both mice usable on one computer, the steps below cover the common setups.
Identify each mouse's connection options. Check the underside for a Bluetooth button, a pairing LED, or a model number. Logitech models with Unifying support often show the orange Unifying logo; Logi Bolt models show the Bolt logo. Keep each brand's receiver in its own USB port. A USB hub works if it is powered and reliable; avoid unpowered hubs for receivers because drops in power can cause intermittent disconnects. If the Logitech mouse supports Bluetooth, pair it directly through the operating system's Bluetooth settings and reserve the HP fob for the HP mouse. This frees a USB port. If you must replace a receiver, match the exact model family. For Logitech, confirm Unifying or Bolt compatibility before buying. For HP, contact HP support with the mouse model number and ask for the correct replacement receiver. Test one device at a time. Plug in one receiver, confirm the matching mouse moves the cursor, then add the second. This isolates a faulty receiver from a pairing problem. Red flags that indicate a dead end: a receiver that shows no device in the brand's pairing software, a mouse that never appears in the software's device list, and any advice to "just re-pair" across brands. Stop and check model compatibility instead.
Comparison of connection routes
| Route | Works across brands | Typical setup effort | Main limitation |
|---|---|---|---|
| Brand 2.4 GHz receiver | No | Plug in, often pre-paired | Receiver must match brand and model family |
| Bluetooth | Yes, if the mouse supports it | Pair through OS settings | Some budget mice lack Bluetooth; reconnection can lag |
| Wired USB | Yes | Plug in | Cable tether; not wireless |
| Generic third-party 2.4 GHz receiver | Rarely | Plug in | Usually pairs only with its bundled mouse |
| Brand multi-device receiver (Unifying, Bolt) | No | Install brand software, pair | Accepts only that brand's compatible devices |
Timeline: what happens when you try a cross-brand pair
| Step | What you do | What the hardware does |
|---|---|---|
| 1 | Plug the HP fob into the computer | Fob enumerates as an HP input device; OS installs it |
| 2 | Turn on the Logitech mouse | Mouse transmits on its own channel with its own identity |
| 3 | Move the Logitech mouse | HP fob receives packets it does not recognize and discards them |
| 4 | Open Logitech software | Software looks for Logitech receivers; finds none |
| 5 | Try OS Bluetooth settings | No Bluetooth device appears unless the mouse is in pairing mode |
| 6 | Re-plug or reinstall drivers | Behavior does not change; the barrier is firmware identity |
| 7 | Switch to each brand's own receiver or Bluetooth | Both mice work independently on the same computer |
Limitations and what the evidence supports
This article describes stable radio and firmware behavior, not a specific product's internals. Manufacturers do not publish the pairing keys or the exact authentication method, so the mechanism is explained at the level the public documentation and observable behavior support. Compatibility claims should be checked against the specific model numbers, because product lines change and a receiver that shipped with one generation may not pair with another. Replacement receiver availability varies by region and model age, and older models may have no replacement sold at all. Prices for replacement receivers vary and are not quoted here because they change frequently; check the manufacturer's store or an authorized retailer for current availability. If a mouse is under warranty, contact the manufacturer before buying a third-party receiver, since a mismatched part can void coverage.
No clinical, legal, or financial guidance is involved here, so no high-stakes disclaimer applies. The practical takeaway is narrow and testable: pair each mouse to its own brand's receiver or to Bluetooth, and treat any instruction to cross-pair brands as a sign the source has not checked the mechanism.