Indledning
This manual provides comprehensive instructions for the setup, operation, and maintenance of your Keychron K4 RGB Hot Swappable Mechanical Keyboard. Designed for productivity and a tactile typing experience, the K4 features a 96% layout with 100 keys, offering both Bluetooth wireless and USB wired connectivity. It is compatible with both Mac and Windows operating systems.
Pakkens indhold
- Keychron K4 mekanisk tastatur
- USB Type-C-kabel
- Keycap aftrækker
- Aftrækker
- Ekstra taster til Windows- og Mac-operativsystemer
- Brugervejledning (dette dokument)
Opsætning
1. Første opladning
Before first use, connect the keyboard to a USB power source using the provided USB Type-C cable. The keyboard features a 4000 mAh battery, providing up to 240 hours of usage with the backlight disabled.
2. Forbindelsestilstande
The Keychron K4 supports both Bluetooth wireless and USB wired connections.

Image: The Keychron K4 keyboard is designed for broad compatibility, supporting both Mac and Windows operating systems, and connecting seamlessly with various devices including desktops, laptops, and smartphones/tablets.
2.1. Bluetooth-forbindelse
- Sørg for, at tastaturets tilstandsknap (placeret på siden) er indstillet til "BT" (Bluetooth).
- Tryk og hold på Fn + 1 (eller Fn + 2 or Fn + 3) key combination for 4 seconds until the '1' (or '2' or '3') key flashes rapidly. This indicates the keyboard is in pairing mode.
- On your device (computer, smartphone, tablet), enable Bluetooth and search for "Keychron K4".
- Select "Keychron K4" from the list of available devices to complete the pairing process. The corresponding number key will stop flashing and remain solid when connected.
- The keyboard can connect with up to 3 devices and switch between them easily using Fn + 1, Fn + 2, eller Fn + 3.
2.2. USB-kablet forbindelse
- Ensure the keyboard's mode switch is set to "Cable".
- Connect the USB Type-C cable from the keyboard to your computer's USB port.
- Tastaturet vil automatisk blive genkendt og klar til brug.
3. Operativsystemskift
The Keychron K4 has a dedicated switch for Mac and Windows layouts. Locate the OS switch on the side of the keyboard and set it to your desired operating system for optimal key mapping.

Image: The Keychron K4 keyboard seamlessly integrates with Apple devices, as shown here next to an iMac and Magic Mouse, highlighting its Mac compatibility.
Betjeningsvejledning
1. Nøglefunktioner og layout
The K4 features a 96% layout with 100 keys, including a number pad. It provides all necessary Mac function keys and is fully compatible with Windows. Extra keycaps for both operating systems are included for customization.

Billede: En omfattende view of the Keychron K4 keyboard, highlighting its compact 96% layout which includes a full numeric keypad, and its vibrant RGB backlighting.
2. Baggrundslysstyring
The K4 features enchanting RGB backlighting with over 15 types of flashing light modes. All backlight controls are managed directly from the keyboard without the need for software.
- Fn + Light Bulb Key (F5): Cycle through different RGB lighting effects.
- Fn + venstre pil: Reducer baggrundsbelysningens lysstyrke.
- Fn + højre pil: Øg baggrundsbelysningens lysstyrke.
- Fn + Pil op: Increase backlight speed/effect.
- Fn + pil ned: Decrease backlight speed/effect.

Image: A detailed shot of the Keychron K4's RGB backlighting, showcasing the vibrant and customizable illumination beneath the keycaps.
3. N-nøgleoverførsel (NKRO)
K4 understøtter N-key rollover (NKRO) i kablet tilstand, hvilket gør det muligt at registrere alle taster samtidigt. I trådløs tilstand understøtter den 6-key rollover (6KRO).
Opretholdelse
1. Rengøring af tastaturet
For at rengøre dit tastatur skal du først afbryde alle strømkilder. Brug en blød, fnugfri klud, der er let tørret.ampskylles med vand eller en mild rengøringsopløsning. Undgå at sprøjte væsker direkte på tastaturet. Brug trykluft eller en lille børste til rengøring mellem tasterne.
2. Hot-swap-kontakter
The K4 hot-swappable version allows you to personalize your typing experience by changing switches without soldering. This feature enables easy replacement of switches if they become faulty or if you wish to try different switch types (e.g., Gateron G Pro Brown, Red, Blue).

Image: This image demonstrates the hot-swappable capability of the Keychron K4, showing various Gateron switches detached from the keyboard's PCB, allowing for easy customization or replacement.
2.1. Udskiftning af afbrydere
- Brug den medfølgende tastaftrækker til forsigtigt at fjerne den ønskede tast.
- Use the provided switch puller to carefully grip the switch from its top and bottom clips. Pull straight up to remove the switch from the PCB.
- Juster stifterne på den nye kontakt med hullerne på printkortet. Sørg for, at stifterne er lige.
- Gently push the new switch into place until it clicks securely. Do not force it.
- Udskift tastaturdækslet.
3. Keycap Replacement
Keycaps can be removed and replaced using the keycap puller. This is useful for cleaning or for installing custom keycap sets. Ensure proper alignment when replacing keycaps.
Fejlfinding
- Tastatur opretter ikke forbindelse via Bluetooth:
- Sørg for, at tastaturets tilstandsknap er indstillet til "BT".
- Verify the keyboard is in pairing mode (Fn + 1/2/3 key flashing).
- Check your device's Bluetooth settings and ensure Bluetooth is enabled.
- Prøv at glemme enheden på din computer/telefon og parre den igen.
- Sørg for, at tastaturet er tilstrækkeligt opladet.
- Bluetooth connection lag or disconnection:
- Flyt tastaturet tættere på din enhed for at reducere interferens.
- Sørg for, at der ikke er andre stærke trådløse signaler, der forstyrrer.
- Tjek batteriniveauet; lavt batteriniveau kan påvirke den trådløse ydeevne.
- Consider using the wired USB connection for critical tasks or gaming if wireless performance is inconsistent.
- Baggrundsbelysningen virker ikke eller sidder fast:
- Ensure the backlight is not turned off (Fn + Light Bulb key).
- Adjust brightness using Fn + Left/Right Arrow keys.
- A full charge might resolve minor power-related issues.
- Taster reagerer ikke:
- If using wireless, check battery and connection.
- If using wired, ensure the USB cable is securely connected.
- For specific keys, consider the hot-swappable feature: remove the keycap and switch, inspect the switch pins for bending, straighten if necessary, and reinsert. If the switch is faulty, replace it.
- Keyboard not recognized by computer:
- Prøv en anden USB-port eller et andet kabel.
- Ensure the OS switch on the keyboard matches your computer's operating system.
- Genstart din computer.
Specifikationer
| Feature | Detalje |
|---|---|
| Mærke | Keychron |
| Modelnummer | Keychron K4J3 |
| Layout | 96% (100-tangenter) |
| Forbindelse | Bluetooth 5.1 (up to 3 devices) & USB Type-C Wired |
| Afbrydere | Gateron G Pro Brown (Hot-Swappable) |
| Baggrundsbelysning | RGB (15+ types of flashing light mode) |
| Batterikapacitet | 4000 mAh |
| Batterilevetid | Up to 240 hours (backlight disabled) |
| N-Key Rollover (NKRO) | Kablet tilstand: NKRO; Trådløs tilstand: 6KRO |
| Operativsystemkompatibilitet | macOS, Windows |
| Dimensioner (LxBxH) | 14.8 x 5.08 x 1.5 tommer |
| Varens vægt | 2.05 pund |
Garanti og support
Keychron products are designed for durability and performance. For specific warranty terms and conditions, please refer to the warranty information provided with your purchase or visit the official Keychron website. For technical support, troubleshooting assistance, or inquiries regarding your Keychron K4 keyboard, please contact Keychron customer service directly.
Officiel nøglering Webwebsted: www.keychron.com





