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Dell Pro KM5221W Keyboard & Mouse
Dell

Dell Pro KM5221W Keyboard & Mouse

Bottom line: The Dell Pro KM5221W Keyboard & Mouse: Single RF 2.4GHz receiver runs both keyboard and mouse, freeing a USB port; main trade-off: RF 2.4GHz only, so no Bluetooth pairing for tablets or a second machine.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For keyboards, mice, headsets and other PC peripherals, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Single RF 2.4GHz receiver runs both keyboard and mouse, freeing a USB port
  • ✓ Quiet key switches Dell tunes for conference calls and shared offices
  • ✓ Programmable keys plus programmable scroll wheel for custom shortcuts
  • ✓ Mouse steps from native 1600 DPI to 4000 DPI preset via Dell Peripheral Manager
  • ✓ Symmetrical mouse shell works equally for left- and right-handed users

Cons

  • ✗ RF 2.4GHz only, so no Bluetooth pairing for tablets or a second machine
  • ✗ Losing the USB receiver means losing both devices at once
  • ✗ DPI presets require installing Dell Peripheral Manager, not on-mouse buttons
  • ✗ Full-size layout with number pad takes significant desk depth

Manufacturer description

The Dell Pro KM5221W pairs a full-sized wireless keyboard with a symmetrical wireless mouse over a single RF 2.4GHz connection, making it a straightforward desk upgrade if you want fewer cables without moving to Bluetooth pairing menus. Dell built this combo around all-day productivity: the keyboard is one of the quietest in Dell's wireless lineup, so typing during a conference call or in a shared office does not broadcast every keystroke to the room. Programmable keys and a programmable scroll wheel let you map the shortcuts you actually reach for, and the mouse tracks at a native 1600 DPI…

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SpecPicks Verdict

SpecPicks scored Dell Pro KM5221W Keyboard & Mouse using a rating × review-volume × price-fit model applied to published specs and reviews across the gaming peripherals category. Dell's gaming peripherals lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for gaming peripherals of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How does the Dell KM5221W connect to my computer?

It uses an RF 2.4GHz wireless link through a USB receiver, and one receiver covers both the keyboard and the mouse. There is no Bluetooth mode listed, so you need a free USB port.

Is the KM5221W mouse usable left-handed?

Yes. Dell designed the mouse with a symmetrical shape specifically so it works for both left- and right-handed users, unlike contoured right-hand-only office mice.

What DPI does the mouse track at?

The native sensor resolution is 1600 DPI, with preset steps up to 4000 DPI. You change between presets in the Dell Peripheral Manager software rather than with a button on the mouse.

Is this keyboard quiet enough for an open office or video calls?

Dell markets it as one of its quietest wireless keyboards, aimed specifically at conference calls and working near other people. It is a low-noise membrane-style office board, not a clicky mechanical one.

Key Features

  • Enhance your all-day productivity with this RF 2.4GHz wireless full-sized keyboard and mouse.
  • Programmable keys and scroll wheel allow you to gain quick access to your frequently used shortcuts
  • The native 1600 DPI mouse offers preset DPIs of up to 4000 adjustable via the Dell Peripheral Manager, offering accurate tracking across a wide range of display resolutions
  • Work with one of the quietest wireless keyboards whether on a conference call or in proximity with others. Symmetrically designed, the wireless mouse is great for both left and right-handed users

Full Specifications

BrandDell
ColorBlack
Unit Count1 Count
ConnectivityWireless, 2.4GHz
Model NumberKM5221W
Power SourceBattery Powered
Item Type NameKeyboard & Mouse
Number of Keys102
Connection TypeWireless
Keyboard LayoutQWERTY
Mfr Part NumberKM5221WBKB-US
Special FeatureWireless
Antenna LocationOffice
Hand OrientationAmbidextrous
Compatible DevicesPersonal Computer
Movement DetectionOptical
Number of Batteries2 AAA batteries required. (included)
Keyboard DescriptionWireless
Warranty DescriptionManufacture
Connectivity TechnologyRF 2.4GHz wireless

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Dell Pro KM5221W Keyboard & Mouse is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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