Dell Pro Wireless Keyboard and Mouse KM5221W User’s Guide Keyboard model: KB3121W Mouse model: MS3121W Regulatory model: KB3121Wt/MS3121Wt/SD-8160 Regulatory model: KB3121Wp/MS3121Wp/DGRFEO
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. © 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents What’s in the box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Mouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Dell Peripheral Manager . . . . . . . . . . . . . . . . .
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Statutory Information . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Limited warranty and return policies . . . . . . . . . . . . . . . . . . 23 For U.S. customers: . . . . . . . . . . . . . . . . . . . . . . . . . . .
What’s in the box 1 2 3 5 4 1. Keyboard 2. Mouse with USB receiver 3. AAA-type Batteries (for keyboard) 4. AA-type Battery (for mouse) 5.
Features Keyboard Top view 1 2 Bottom view 3 4 3 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.
Mouse Top view 1 2 Bottom view 3 4 5 6 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.
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 1. Using your fingertip, pry open the battery cover. 2. Install the AAA batteries into the battery compartment. Then replace the battery cover.
3. Slide the power switch to the right to turn on the keyboard.
Setting up your wireless mouse 1. Locate the slot on the side of the mouse cover. Using your fingertip, pry open the cover. 2. Remove the USB receiver from its compartment.
3. Install the AA battery into the battery compartment. 4. Replace the mouse cover.
5. Slide the power switch down to turn on the mouse.
Pairing your wireless keyboard and mouse Your Dell wireless keyboard and mouse can be paired with devices using USB receiver. You can pair and switch between a laptop, desktop, and a compatible mobile device. Pairing with a USB receiver NOTE: You can connect a device to your wireless keyboard and mouse using the Dell Universal pairing. 1. Detach the receiver tag from the USB receiver. 2. Install the Dell Universal USB receiver to the USB port on your computer.
3. Slide the power switch to the right to turn on the keyboard. Then slide the power switch down to turn on the mouse. The keyboard and mouse are paired with your USB device.
Keyboard Specifications General Model number KB3121W Connection type Wireless (2.4 GHz with nano receiver) System requirement • Windows Server 2012; 2012 R2, 2016 (RF receiver only) • Windows 8, 32/64-bit • Windows 10, 32/64-bit • Android • Chrome • MAC OS • Linux 6.x, Ubuntu 18 and Redhat 8 Enterprise • Free-DOS (RF receiver only) Electrical Operating voltage 2 V - 3.2 V Battery type Two AAA batteries Physical characteristics Weight (with batteries) 440 g (0.97 lb) Dimensions: Length 432.
Environmental Temperature: Operating -10°C to 50°C (14°F to 122°F) Storage -40°C to 65°C (-40°F to 149°F) Storage humidity 95% maximum relative humidity; non-condensing Wireless RF resolution 2.
Mouse Specifications General Model number MS3121W Connection type Wireless (2.4 GHz with nano receiver) System requirement • Windows Server 2012; 2012 R2, 2016 (RF receiver only) • Windows 8, 32/64-bit • Windows 10, 32/64-bit • Android • Chrome • Linux 6.x, Ubuntu • Free-DOS (RF receiver only) Electrical Operating voltage 1 V - 1.5 V Battery type One AA battery Physical characteristics Weight (without battery) 68.51 g (0.15 lb) Dimensions: Length 115.51 mm (4.55 in.) Width 61.96 mm (2.44 in.
Environmental Temperature: Operating -10°C to 50°C (14°F to 122°F) Storage -40°C to 65°C (-40°F to 149°F) Storage humidity 95% maximum relative humidity; non-condensing Wireless RF resolution 2.
Troubleshooting Problems Possible solutions Keyboard/mouse is not functioning 1. Check if the batteries are inserted in the correct orientation. The batteries “+” and “-” ends should be placed as indicated on the battery compartment. 2. Check the battery level. • If the device uses the rechargeable batteries, ensure that the batteries are fully charged. • If the batteries are exhausted, replace them with a new ones. 3. Turn off the device, and then turn it on.
Problems Possible solutions Unable to pair the keyboard/ mouse with your computer 1. Check the battery level. • If the device uses the rechargeable batteries, ensure that the batteries are fully charged. • If the batteries are exhausted, replace them with a new ones. 2. Turn off the device, and then turn it on. Check if the battery-status light is flashing amber 10 times, indicating that the battery power is low. If the batteries are fully depleted, the battery-status light will not turn on. 3.
Problems Troubleshooting a slow moving cursor Possible solutions 1. Ensure that the sensor is not obstructed or dirty. 2. Glass or very smooth glossy surfaces are not suitable for the mouse sensor to capture the mouse movement. Using a dark colored fabric mouse pad can improve the tracking. 3. Change the mouse settings to adjust the pointer speed. Click or tap the tab that matches the Operating System (OS) installed on your laptop/desktop and perform the steps within that section to change the settings.
Statutory Information Warranty Limited warranty and return policies Dell-branded products carry a three-year limited hardware warranty. If purchased together with Dell system, it will follow the system warranty. For U.S. customers: This purchase and your use of this product are subject to Dell’s end user agreement, which you can find at Dell.com/terms. This document contains a binding arbitration clause.
