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Logitech MX Keys S

Test every key and repeated-key behavior on MX Keys S, then separate keyboard hardware from Easy-Switch device selection, Bluetooth or Logi Bolt connectivity.

2 verified model facts5 relevant live tests1 exact compatibility answers1 model-specific fixesReviewed 2026-08-11

Model facts that change the troubleshooting path

01

Logitech supports switching across up to three devices with the Easy-Switch keys.

02

Logitech documents Bluetooth Low Energy and Logi Bolt as the supported wireless connection paths for this family.

Documented connection pathsBluetooth Low Energy · Logi Bolt USB receiver · USB-C charging

Test matrix

What to test and what a pass actually tells you

Run the test closest to the symptom. A passing result narrows the diagnosis; it does not certify the entire device.

Keyboard TestPress keys and verify that the browser receives the expected keyboard events.

A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.

Keyboard Chatter TestLook for duplicate key presses that may indicate switch chatter.

A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.

NKRO Keyboard TestCheck how many simultaneous key presses your browser receives.

A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.

Stuck Key TestIdentify keys that appear to stay pressed after release.

A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.

Keyboard Event ViewerInspect key, code, repeat, and modifier data from browser keyboard events.

A pass proves browser input events are arriving; app/game mappings, profiles and accessibility settings move higher on the list.

Diagnostic focus

Problems worth separating on this model

01 · One key misses or repeatsReproduce this symptom independently, then choose the closest live test or exact compatibility record before changing drivers, firmware, cables or hardware.

02 · Wrong Easy-Switch host selectedReproduce this symptom independently, then choose the closest live test or exact compatibility record before changing drivers, firmware, cables or hardware.

03 · Bluetooth works but Logi Bolt does not or vice versaReproduce this symptom independently, then choose the closest live test or exact compatibility record before changing drivers, firmware, cables or hardware.

04 · Keyboard works in DeviceOK but shortcut fails in one appReproduce this symptom independently, then choose the closest live test or exact compatibility record before changing drivers, firmware, cables or hardware.

Model-specific problems

Start with the symptom people actually search for

These paths combine this model's documented limits with live evidence, instead of copying a generic troubleshooting checklist.

Logitech MX Keys S connected but typing on the wrong computerMX Keys S supports Easy-Switch across up to three devices. A healthy keyboard can therefore appear unresponsive on one computer when a different Easy-Switch host is selected.

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Exact specifications

Compatibility questions tied to this model

Can Logitech MX Keys S use Bluetooth and Logi Bolt?Yes. Logitech documents MX Keys S with Bluetooth Low Energy and Logi Bolt connectivity, plus Easy-Switch across up to three paired devices. Logi Bolt is a specific receiver technology and should not be assumed compatible with older Unifying receivers.

Evidence handoff

If the browser cannot reach the suspected subsystem

Keep the browser result as one observation, then move to the operating system or manufacturer diagnostic that can see the protected hardware state. Do not interpret an unsupported browser API as a failed component.

For model-specific firmware, drivers or service diagnostics, use the official Logitech source linked on this page.