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- Table of Contents
- Top
- Main Differences
- Design
- Typing Experience
- Performance
- Software and Operating System
- Comments
Logitech MX Keys vs Logitech K400 Plus
Side-by-Side Comparison
Products
Logitech MX Keys
Logitech K400 Plus
Tested using Methodology v1.3.1
Updated Nov 27, 2023 05:24 PM
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Amazon.comTested using Methodology v1.2
Updated Feb 27, 2024 06:08 PM
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Amazon.com
ConnectivityWireless
SizeFull-size (100%)
Switch TypeScissor
N-Key Rollover (NKRO)No
Hot-Swappable SwitchesNo
ConnectivityWireless
SizeTenKeyLess (80%)
Switch TypeRubber Dome
Hot-Swappable SwitchesNo
Variants
- MX Keys (Black (Multi-OS))
- MX Keys (Graphite (Multi-OS))
- MX Keys (Space Grey (Mac OS))
- K400 Plus (Black)
- K400 Plus (White)
Our Verdict
Logitech MX Keys
Logitech K400 Plus
The Logitech MX Keys is a better keyboard than the Logitech K400 Plus. The MX Keys has a rechargeable battery and can pair with up to three devices at once via Bluetooth, unlike the K400 Plus that uses AA batteries and doesn't support Bluetooth. The MX Keys also has a built-in brightness sensor that will turn on backlighting to help you type even in darker rooms. However, the MX Keys has a Numpad instead of a trackpad, so you would need to have an accompanying mouse if you wanted to use it with a home theater setup.
Main Differences forGaming
Gaming
Threshold
Gaming
6.4
6.0
Backlight Features
7.5
0.0
Backlight Clarity
8.0
0.0
Build Quality
8.0
6.0
Single-Key Latency
5.8
6.9
Pre-Travel
1.3 mm
2.0 mm
Operating Force
61 gf
65 gf
Macro Keys And Programming
4.0
0.0
Full Comparison
Design
Dimensions
Top Picture
Size
Full-size (100%)
TenKeyLess (80%)
Height
0.8" (2.0 cm)
0.9" (2.2 cm)
Width
16.9" (43.0 cm)
14.0" (35.5 cm)
Depth
5.2" (13.2 cm)
5.5" (13.9 cm)
Depth With Wrist Rest
N/A
N/A
Weight
1.77 lbs (0.805 kg)
0.88 lbs (0.400 kg)
Build Quality
8.0
6.0
Build Quality Close Up
Keycap Material
ABS
ABS
Ergonomics
7.0
7.0
Side Picture
Curved/Angled
No
No
Split Keyboard
No
No
Key Alignment
Staggered
Staggered
Minimum Incline
5.8°
3°
Medium Incline
N/A
N/A
Maximum Incline
N/A
N/A
Home Row Height
13.1 mm (0.5")
17.9 mm (0.7")
Hardware Customizability
0.0
0.0
Customizability Overview
Replaceable Cherry Stabilizers
No
No
Stabilizer Fixation
Non-Customizable Design
Non-Customizable Design
Spacebar Stabilizer Size
Non-Customizable Design
Non-Customizable Design
Size Of Right Mod Keys
Non-Standard
Non-Standard
Hot-Swappable Switches
No
No
Switch Stem Shape
Non-Customizable Design
Non-Customizable Design
Switch PCB Socket
Non-Customizable Design
Non-Customizable Design
North-Facing Cherry MX Interference
Non-Customizable Design
Non-Customizable Design
Backlight Features
7.5
0.0
Backlighting Picture
Brightness Max
Backlighting
Yes
No
Brightness Min
RGB
No
No
Per-Key Backlighting
Yes
No
Effects
No
No
Software Controllable
Yes
No
Backlight Clarity
8.0
0.0
White Shot
Cable & Connector
Connectivity
Wireless
Wireless
Detachable
Yes (Charge Only)
No
Length
4.4 ft (1.3 m)
N/A
Connector (Keyboard side)
USB type-C
No Cable
Wireless Versatility
10
0.9
Bluetooth
Yes
No
Bluetooth Multi-Device Pairing
3
No
Proprietary Receiver
Yes
Yes
Battery Type
Rechargeable
2x AA
Macro Keys And Programming
4.0
0.0
Dedicated Macro Keys Count
0
0
Onboard Macro Programming
No
No
Macro Programming With Software
Yes
No
Extra Features
Extra Features
Media Keys
Non-Dedicated
Non-Dedicated
Trackpad / Trackball
No
Yes
Scroll Wheel
No
No
Control Knob
No
No
USB Passthrough
No
No
Numpad
Yes
No
Windows Key Lock
Yes
No
Lock Indicator
Caps Lock
No Indicator
In The Box
Bundle Picture
Typing Experience
Typing Quality
8.0
6.5
Key Spacing
19.0 mm (0.748")
Typing Noise
9.6
9.3
Typing Sample
Average Loudness
40.2 dBA
42.7 dBA
High Pitch Clicks
No
No
Switches
Wobble Video
Switch Name
No Marketed Name
No Marketed Name
Switch Type
Scissor
Rubber Dome
Feel
Tactile
Tactile
Analog
No
Keystrokes
Key Switch Actuation Graph
Operating Force
61 gf
65 gf
Actuation Force
36 gf
41 gf
Pre-Travel
1.3 mm
2.0 mm
Total Travel
1.9 mm
2.9 mm
Latency
5.8
6.9
Latency Video
Latency Wired
N/A
N/A
Latency Receiver
26.8 ms
16.7 ms
Latency Bluetooth
21.7 ms
N/A
Performance
Single-Key Latency
5.8
6.9
Single-Key Latency Graph
Best Connection
21.7 ms
Best Connection Std Dev
±7.9 ms
Wired
N/A
N/A
Receiver
26.8 ms
16.7 ms
Bluetooth
21.7 ms
N/A
PCB (Estimated)
20.8 ms
Multi-Key Latency
6.2
Latency Video
Multi-Key Latency Graph
Connection Evaluated
Receiver
Key Press
22.7 ms
Key Release
43.1 ms
Data Transmission
5.3
Multi-Key Raw USB
Connection Evaluated
Receiver
USB Polling Rate
500 Hz
Effective Update Rate
125 Hz
N-Key Rollover (NKRO)
No
Multiple Keys Per USB Report
No
Chord Split
1.5
Chord Split Graph
4 Chord Split Delay
60.3 ms
8 Chord Split Delay
N/A
Software and Operating System
Configuration Software
Software Tour
Software Name
Logi Options+
Logitech Options
Software Windows Compatible
Yes
Yes
Software macOS Compatible
Yes
Yes
Onboard Memory
No
No
Profiles
6+
No Profile
Computer Compatibility
10
10
Windows
Fully Compatible
Fully Compatible
macOS
Fully Compatible
Fully Compatible
Linux (Ubuntu 22)
Fully Compatible
Fully Compatible
Media Key Compatibility
Windows, MacOS & Linux
Windows, MacOS & Linux
Wireless Mobile Compatibility
10
0.0
Android
Fully Compatible
Not Compatible
iOS
Fully Compatible
Not Compatible
iPadOS
Fully Compatible
Not Compatible
Media Key Compatibility
Android, iPhone & iPad
Not Compatible
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Logitech MX Keys
Logitech K400 Plus
Comments
Logitech MX Keys vs Logitech K400 Plus: Main Discussion
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