Is this receiver compatible with 1) logitech k850 keyboard and 2) logitech m270 mouse? thanks!

These should be compatible with any Logitech wireless perif that doesn’t use the bolt dongle.

do these work with the M575 trackball mouse?

No, the trackball USB is just a simple USB receiver Bertrand

Does it work to connect a k545

Yes if it has the unifying asterisk symbol

Does it work with mk520 keyboard?

Yes! "Increase productivity with this Logitech MK520 wireless keyboard and mouse combo. A Unifying receiver connects the two devices to your laptop wirelessly for a clutter-free workstation, while the long battery life keeps each device working smoothly...."

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Logitech USB Unifying Receiver - 2 Pack

Product ID: 423938134

Details

Brand
Logitech
Compatible devices
Desktop Laptop
Data link protocol
USB
Data transfer rate
3 Megabits Per
Hardware interface
USB

📶Connects 6 devices simultaneously

🔌Plug-and-play USB wireless receiver

🖱️Compatible with multiple Logitech peripherals

Description

🔗 Unlock your workspace potential with one receiver to rule them all!

ULTRA COMPACT DESIGN - Tiny receiver fits discreetly into your USB port without blocking adjacent slots or adding bulk.
PLUG PLAY SIMPLICITY - Effortless setup with Logitech’s free Unifying software—get connected in minutes, no tech headaches.
RELIABLE WIRELESS PERFORMANCE - Enjoy lag-free, stable connections with a solid 10-foot range—perfect for dynamic workspaces.
UNIVERSAL LOGITECH COMPATIBILITY - Works flawlessly with a wide range of Logitech devices, from Marathon Mice to advanced keyboards.
SEAMLESS MULTI DEVICE CONNECTIVITY - Pair up to 6 Logitech mice and keyboards with a single receiver for clutter-free productivity.

The Logitech USB Unifying Receiver 2-Pack offers a compact, reliable wireless connection solution that supports up to six compatible Logitech devices simultaneously. Designed for seamless plug-and-play setup via Logitech’s free software, it ensures lag-free performance within a 10-foot range. Ideal for professionals seeking to streamline their workspace with versatile, multi-device connectivity.

Specifications

ASIN	B07MVP819S
Best Sellers Rank	#52,825 in Computers ( See Top 100 in Computers ) #1,538 in Computer Mice
Brand	Logitech
Compatible Devices	Desktop, Laptop
Compatible devices	Desktop, Laptop
Customer Reviews	4.4 out of 5 stars 1,788 Reviews
Data Link Protocol	USB
Data Transfer Rate	3 Megabits Per Second
Data link protocol	USB
Data transfer rate	3 Megabits Per Second
Hardware Interface	USB
Hardware interface	USB
Item Weight	0.01 Ounces
Item weight	0.01 Ounces
Manufacturer	Logitech
UPC	798506862573
Unit Count	2.0 Count

Reviews

A**L

13.02.2025

A**A

19.02.2025

L**H

23.02.2026

B**O

17.08.2022

B**O

25.10.2024

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