Buying a mechanical keyboard: how to choose the right QWERTZ layout, switches, wireless connection and size

A mechanical keyboard can feel very different from a traditional membrane or chiclet keyboard when typing, programming or gaming. However, not every model automatically offers greater comfort or better control. Features that have little relevance in everyday use are often heavily promoted, while important details such as the layout and compatibility receive little attention.

Before buying, you should therefore avoid these three common pitfalls:

• US QWERTY instead of German QWERTZ: Some compact and wireless models use a US layout. The labelling and position of certain special characters then differ from those on a German keyboard.
• RGB lighting as the main selling point: An RGB keyboard can change the look of your workspace, but it says nothing about switch quality, connection stability or typing comfort.
• Hot-swap without checking compatibility: A hot-swap keyboard lets you replace switches without soldering. However, the key question is whether it actually supports the 3-pin or 5-pin switches you want to use.

The most important buying criteria for a mechanical keyboard

1. Layout and form factor: QWERTZ, 75 per cent or full-size

For users in Germany, a mechanical QWERTZ keyboard with an ISO-DE layout is usually the simplest choice. It offers German key labelling and the familiar arrangement of umlauts and special characters. With a US layout, you can select German in your operating system settings, but the symbols printed on the keys will not fully match the characters entered.

The form factor determines how many keys the keyboard has and how much space it requires:

• Full-size or 100 per cent: Includes a number pad, function keys and navigation keys. Suitable for spreadsheets, accounting and office applications.
• 96 per cent: More compact than full-size, while retaining many standard keys and the number pad.
• 75 per cent: A compact keyboard with function keys, arrow keys and essential navigation keys. It normally does not include a number pad.
• 60 to 65 per cent: Saves a great deal of space, but depending on the model, may omit function keys or separate navigation keys.

A 75% keyboard is a practical compromise for many workspaces. However, if you regularly enter numbers, you should take the missing number pad into account.

2. Switch type and noise

Mechanical switches mainly differ in actuation point, resistance and feedback. They are generally divided into three groups:

• Linear switches: Smooth key travel without a noticeable tactile bump. They are often chosen for gaming and fast typing.
• Tactile switches: Provide noticeable resistance during the key press. This can offer clearer feedback when typing.
• Clicky switches: Also produce a clearly audible clicking sound. This can be disruptive in a shared office or when using the keyboard at night.

Noise is not determined by the switch alone. Keycaps, the case, stabilisers and the fitted sound-dampening materials also affect typing noise. Claims such as ‘quiet’ should therefore not be assessed in isolation.

3. Connection, power and maintenance

A wireless mechanical keyboard can connect via Bluetooth, 2.4 GHz wireless or USB-C. A tri-mode keyboard typically combines all three options:

• USB-C cable: No battery charging or wireless pairing required; suitable for stationary use.
• 2.4 GHz wireless: Usually connects via a USB receiver and is practical for desktop PCs and gaming setups.
• Bluetooth: Ideal for laptops, tablets, smartphones and multiple paired devices.

For wireless models, check the battery capacity, charging port and whether the receiver is included. With a USB-C keyboard, you should also check whether the cable is detachable. This makes transport and replacement easier.

Our selection by user profile

Suitable for: Budget-conscious beginners

Logitech K120 Wired Keyboard

Why this product suits this profile: If you are looking for a reliable keyboard for the office, school or home working, this model offers a German QWERTZ layout, 104 keys and a direct USB connection.

How this product avoids the pitfall

The clearly specified German layout prevents the common confusion with a US keyboard. Wired use eliminates the need for batteries and wireless pairing.

Key benefit & strengths

Full-size format, USB plug-and-play, splash-resistant construction according to the product details, and height-adjustable feet.

Suitable for: Buyers with high quality standards

CHERRY MX 2.0S Wired Mechanical Gaming Keyboard

Why this product suits this profile: This full-size gaming keyboard combines a German ISO-QWERTZ layout with CHERRY-MX2A-Red switches, a USB connection and customisable RGB lighting.

How this product avoids the pitfall

The German layout is explicitly specified. The wired connection reduces potential pairing and battery issues during longer gaming or work sessions.

Key benefit & strengths

Full N-Key Rollover, anti-ghosting, Windows-key lock and, according to the product details, over 100 million keystrokes.

Suitable for: Specific uses & heavy users

Logitech ERGO K860 Wireless Ergonomic Keyboard

Why this product suits this profile: Frequent typists and office users looking for an ergonomic keyboard with a split key layout and wrist rest will find a different approach here from that of compact gaming models.

How this product avoids the pitfall

The design is clearly geared towards extended typing sessions rather than being defined purely by decorative lighting. Bluetooth and the USB receiver provide two connection options.

Key benefit & strengths

Split, curved layout, padded wrist rest, three tilt settings and QWERTZ layout according to the product details.

Suitable for: Tech and custom keyboard enthusiasts

AJAZZ AK820 Wired Mechanical Keyboard

Why this product suits this profile: The 82-key layout, USB-C, RGB lighting, volume control and full-key hot-swap functionality appeal to users who want to customise their compact keyboard.

How this product avoids the pitfall

The description explicitly specifies German QWERTZ, USB-C and compatible 3-pin switches. This means you can check the key features before buying.

Key benefit & strengths

75% form factor with arrow and function keys, hot-swap functionality, detachable USB-C cable and rotary volume control.

Frequently asked questions about mechanical keyboards

Is a mechanical keyboard suitable for the office?

Yes, provided the switch type and noise level suit the environment. Linear or tactile switches can be suitable for office work. Clicky switches, on the other hand, produce a clearly audible sound. An ergonomic keyboard with membrane switches may also be a sensible choice for users who want to type as quietly as possible.

How long does a mechanical keyboard last?

Its lifespan depends on the switches, keycaps, electronics, usage and care. Manufacturer claims about the number of keystrokes are guidelines, not a guarantee of the lifespan of the entire device. Dust, liquids and mechanical stress can reduce durability. A hot-swap keyboard makes it easier to replace individual compatible switches.

Does a wireless keyboard use a lot of power?

Power consumption mainly depends on the wireless standard, lighting and battery capacity. RGB lighting generally requires more energy than lighting that is switched off or set to a single colour. For a fixed workspace, a USB keyboard without a battery requires little maintenance; Bluetooth or 2.4 GHz wireless, however, offer greater flexibility when using multiple devices.