Dell Pro Wireless KM5221W User manual

Keyboard model: KB3121W
Mouse model: MS3121W
Regulatory model: KB3121Wt/MS3121Wt/SD-8160
Regulatory model: KB3121Wp/MS3121Wp/DGRFEO
Dell Pro Wireless
Keyboard and Mouse
KM5221W
User’s Guide

© 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks
are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their
respective owners.
2021–01
Rev. A00
Notes, Cautions, and Warnings
NOTE: A NOTE indicates important information that helps you make better use
of your computer.
CAUTION: A CAUTION indicates potential damage to hardware or loss of data if
instructions are not followed.
WARNING: A WARNING indicates a potential for property damage, personal
injury, or death.

│3
Contents
What’s in the box ...............................5
Features ......................................6
Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Mouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Dell Peripheral Manager..........................8
Setting up your wireless keyboard..................9
Setting up your wireless mouse ................... 11
Pairing your wireless keyboard and mouse ..........14
Pairing with a USB receiver . . . . . . . . . . . . . . . . . . 14
Keyboard Specifications.........................16
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Physical characteristics . . . . . . . . . . . . . . . . . . . . 16
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . 17
Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mouse Specifications...........................18
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Physical characteristics . . . . . . . . . . . . . . . . . . . . 18
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . 19
Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4 │
Troubleshooting ...............................20
Statutory Information ..........................23
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Limited warranty and return policies . . . . . . . . . . . . . . . . . . 23
For U.S. customers: . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
For European, Middle Eastern and African customers: . . . . . . . . 23
For non-U.S. customers: . . . . . . . . . . . . . . . . . . . . . . . . 23

What’s in the box │5
What’s in the box
1
23
5
4
1. Keyboard 2. Mouse with USB receiver
3. AAA-type Batteries (for keyboard) 4. AA-type Battery (for mouse)
5. Documents

6 │Features
Features
Keyboard
2
Top view
1
Bottom view
3 34
1. Power switch 2. Battery-status light
3. Keyboard feet 4. Battery cover
NOTE: Open the battery cover to access the PPID/Regulatory label location.
Label location

Features │7
Mouse
3
Top view
1
2
4
6
Bottom view
5
1. Left button 2. Scroll wheel
3. Right button 4. Battery-status light
5. Optical sensor 6. Power switch
NOTE: Open the mouse cover to access the PPID/Regulatory label location.
Label location

8 │Dell Peripheral Manager
Dell Peripheral Manager
Dell Peripheral Manager software enables you to perform the following:
• View device information such as firmware version and battery status through the Info
tab.
• Upgrade the latest firmware updates on your devices.
For more information, see Dell Peripheral Manager User’s Guide on the product page at
www.dell.com/support.

Setting up your wireless keyboard │9
Setting up your wireless
keyboard
1. Using your ngertip, pry open the battery cover.
2. Install the AAA batteries into the battery compartment. Then replace the battery
cover.

10 │Setting up your wireless keyboard
3. Slide the power switch to the right to turn on the keyboard.