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Comment by bayindirh | Hacker News Reader

I never had Bluetooth connection issues with my Logitech hardware, but I wanted mine to work without an OS (i.e. with a Bolt receiver).

Solaar handled the pairing in 30 seconds flat, and I can't be happier. The only thing is, since Bolt doesn't look like proper BT to the OS, battery levels can only be monitored from Solaar itself.

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What's a Bolt receiver?

Bolt is logitech's newer wireless protocol (with devices using a dongle rather than bluetooth) that's supposed to be more secure than the older one.

I think the real highlight of the Bolt receiver is being able to pair up to 6 devices with just a single receiver.

The old unifying receiver was also able to pair up to 6 devices.

I think the real highlight is that it is not backwards compatible. So I now have an MX Keys and an MX Master 3s, both on their own dongle.

IIUIC, Unifying receiver used a completely different protocol, but Bolt protocol is just supercharged Bluetooth with some low latency and encryption sauces on top.

Doesn't bluetooth handle many, many more devices?

It also introduces a ton of lag, especially when more than a single device and some distance is involved (Mouse + Keyboard + Headphones makes my headphones cut out sometimes)

Bluetooth MIDI keyboard + Bluetooth headset = audio glitches. Disappointing.

Sounds nice, except so far I have only one Logitech device that works with the bolt receiver, which is the MX Master 3s.

I also have an MX vertical which uses the unifying receiver. Then I also have a pro x superlight, which has yet another receiver. I believe they call that one lightspeed or something.

So now I have 3 separate adapters for 3 devices, all of which theoretically support pairing multiple devices (I think the lightspeed only does 3 though).

A type of USB wireless receiver: https://www.logitech.com/en-us/products/mice/logi-bolt-usb-r...

Bluetooth Low Energy with some Logitech sauce added into it. Apparently encrypted and marketed for use in contexts where FIPS level security would be required.

It's bluetooth 5 with more tx power as far as I understand

According to their website(1), the bolt is BLE, and the unifying receiver used a proprietary 2.4GHz radio signal.

(1) https://support.logi.com/hc/en-us/articles/1500012483162-Wha...

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