Can You Connect an Old Logitech MX Master Mouse to the New MX Master 4 Dongle?

Connecting Old MX Master to Old Dongle

• 💡 The video begins by demonstrating the connection of an old Logitech MX Master mouse to its original dongle using the Logi Options+ application.
• ✅ The process involves plugging in the old dongle, disabling and re-enabling the mouse within the software, and confirming a successful connection.

Testing the New MX Master 4 Dongle

• 🔌 The new MX Master 4 dongle is introduced, requiring a USB-C adapter for connection to a PC without a native USB-C port.
• ⚠️ The MX Master 4 mouse is automatically detected by the new dongle.

Attempting to Pair Old Mouse with New Dongle

• ❌ An attempt is made to connect an old MX Master mouse to the new MX Master 4 dongle.
• ⚡ The old mouse is put into pairing mode by pressing the connect button for three seconds.
• 🚫 Despite the pairing mode activation, the new dongle does not detect the old mouse.

Compatibility Conclusion

• 📉 The video concludes that it is not possible to connect an old MX Master mouse to the new MX Master 4 Lightspeed adapter.
• ⚠️ This incompatibility means users cannot simply use their existing older mice with the latest Logitech dongle.