Logitech MK550 User Manual

On the mouse bottom, slide the On/Off switch right to turn on the mouse. The Battery LED on the mouse top case
should light green for 10 seconds. (See Battery management for more information.)
Are you experiencing slow or jerky cursor movement? Try the mouse on a different surface (e.g., deep,
dark surfaces may affect how the cursor moves on the computer screen).
Is the keyboard turned on? Slide the keyboard Off/On switch to the On position, as shown in the image
below. The keyboard Status icons should light up.
Re-establish the connection. Use the Unifying software to reset the connection between the keyboard/mouse

Logitech MK550 Specifications

General

Mouse included	Yes
Internal	No
Compatible operating systems	Windows Vista/XP
Frequency band	2.4 GHz
Device interface	RF Wireless
Connectivity technology	Wireless
Minimum system requirements	USB CD-ROM
Windows operating systems supported	Windows 10, Windows 11
Product color	Black
Battery type	AA
Number of batteries supported	4
Package depth	265.11 mm
Package width	78.6 mm
Package height	500.1 mm
Package weight	1740 g
Master (outer) case width	332 mm
Master (outer) case height	283 mm
Master (outer) case length	518 mm
Master (outer) case weight	7470 g