1. Einleitung
Welcome to the user manual for your new LTC NB681 Nimbleback Wired 65% Mechanical Keyboard. This guide provides detailed instructions on setting up, operating, maintaining, and troubleshooting your keyboard to ensure optimal performance and longevity. Please read this manual thoroughly before using the product.

Figure 1: LTC NB681 Nimbleback Wired 65% Mechanical Keyboard
Video 1: LTC NB681 65% Hot Swappable Keyboard OverviewDieses Video bietet einen allgemeinen Überblickview of the keyboard's features and design.
Video 2: LTC Nimbleback NB681 Keyboard. This video showcases the keyboard's aesthetics and some functionalities.
2. Hauptmerkmale
The LTC NB681 Nimbleback Keyboard is designed with a range of features to enhance your typing and gaming experience:
- Compact but Practical 65% Layout: Ultra-compact design with 68 keys, balancing functionality with space-saving. Includes practical arrow, navigation, and control keys.
- Hot-Swap-fähige Schalter: Features a hot-swap PCB, allowing free replacement of 3-pin/5-pin MX-style switches (e.g., Gateron, Kailh). Equipped with quiet linear red switches for nimble reactions and quiet typing.
- 2 USB 2.0 Ports and Type-C Wired Connection: Two built-in USB passthrough ports for connecting peripheral devices like a mouse or flash drive, or for charging mobile devices. The Type-C wired connection ensures high-speed and stable data transmission.
- Dynamische RGB-Hintergrundbeleuchtung: Offers 18 preset backlight modes with 5 adjustable brightness and flowing speed levels, providing gorgeous color schemes and reactive effects.
- Professional Software Support: Customize keypress combinations, assign macros, and personalize RGB lighting effects using the powerful LTC drive software. Compatible with Windows 7/8/10, iOS, and Mac systems.

Figure 2: Visual representation of key features including 68-keys, 2 USB ports, detachable Type-C cable, hot-swappable switch, ergonomic angle, RGB backlit, stand-alone arrow keys, and anti-ghosting.
3. Einrichtung
Follow these steps to set up your LTC NB681 keyboard:
- Auspacken: Carefully remove the keyboard and all accessories from the packaging. Ensure you have the keyboard, USB-C cable, and any included tools (e.g., keycap puller, switch puller).
- Schließen Sie das USB-C-Kabel an: Plug the USB-C end of the provided cable into the Type-C port on the keyboard. Connect the other end (USB-A) to an available USB port on your computer.
- Erste Erkennung: Ihr Computer sollte die benötigten Treiber automatisch erkennen und installieren. Dies kann einige Augenblicke dauern.
- Positionierung: Place the keyboard on a stable, flat surface. You can adjust the typing angle using the foldable feet on the underside of the keyboard for ergonomic comfort.
- Softwareinstallation (optional, aber empfohlen): For advanced customization, download the LTC drive software from the official LTC website. Install it on your Windows or Mac system to remap keys, assign macros, and customize RGB lighting.
Video 3: LTC NB681 Keyboard Unboxing! This video demonstrates the unboxing process and shows the included accessories.

Figure 3: Close-up of the keyboard's 2 built-in USB 2.0 passthrough ports and the detachable Type-C wired connection port.
4. Bedienung Ihrer Tastatur
4.1 Grundfunktionen
- Standard-Typografie: Die Tastatur funktioniert wie eine Standard-QWERTY-Tastatur.
- Arrow, Navigation, and Control Keys: Despite its compact size, the NB681 includes dedicated arrow keys and essential navigation/control keys for convenience.
4.2 RGB-Hintergrundbeleuchtungssteuerung
The NB681 features dynamic RGB backlighting with multiple customization options:
- Ändern der Modi: Drücken Fn + \| (pipe key) to cycle through 18 preset backlight modes.
- Anpassen der Helligkeit: Verwenden Fn + Aufwärtspfeil um die Helligkeit zu erhöhen und Fn + Pfeil nach unten Helligkeit verringern (5 Stufen).
- Geschwindigkeit anpassen: Verwenden Fn + Pfeil nach links to decrease flowing speed and Fn + Pfeil nach rechts to increase flowing speed (5 levels).

Abbildung 4: Die Tastaturdarstellungasing its dynamic 16.8 million RGB backlight with 19 modes and 5 brightness/speed levels.
4.3 Hot-Swap-fähige Schalter
The hot-swappable design allows you to easily change switches without soldering:
- Tastenkappe entfernen: Verwenden Sie den mitgelieferten Tastenkappenabzieher, um die gewünschte Tastenkappe vorsichtig zu entfernen.
- Schalter entfernen: Use the included switch puller to carefully grip the switch and pull it straight up.
- Neuen Schalter einfügen: Align the pins of the new 3-pin or 5-pin MX-style switch with the holes on the PCB. Press firmly until it clicks into place.
- Tastenkappe austauschen: Setzen Sie die Tastenkappe wieder auf den neuen Schalter.

Figure 5: Close-up demonstrating the hot-swappable switch feature, allowing easy replacement of 3-pin or 5-pin mechanical switches.
Video 4: LTC NB681 Red Switch Keyboard Sound Test. This video provides an audio demonstration of the keyboard's red switches.
4.4 Professional Software Customization
The dedicated software allows for in-depth customization:
- Tastenzuordnung: Change the function of any key to suit your preferences.
- Macro Assignment: Create and assign complex macros for gaming or productivity tasks.
- Anpassung der RGB-Beleuchtung: Design your own lighting effects, colors, and patterns beyond the preset modes.

Figure 6: Screenshot showing the professional software interface for customizing RGB backlight, remapping keys, and assigning macros.
5. Wartung
Durch sachgemäße Wartung werden die Langlebigkeit und Leistungsfähigkeit Ihrer Tastatur gewährleistet:
- Regelmäßige Reinigung: Use a soft brush or compressed air to remove dust and debris from between the keycaps. For deeper cleaning, remove keycaps and wipe the surface with a slightly damp cloth. Ensure the keyboard is disconnected before cleaning.
- Schalterpflege: The hot-swappable design makes switch replacement easy if a switch becomes faulty or if you wish to try different switch types. Avoid excessive force when inserting or removing switches to prevent damage to the PCB sockets.
- Kabelmanagement: Keep the USB-C cable untangled and avoid sharp bends to prevent internal wire damage.
6. Fehlerbehebung
If you encounter issues with your LTC NB681 keyboard, try the following steps:
- Tastatur reagiert nicht:
- Stellen Sie sicher, dass das USB-C-Kabel sowohl mit der Tastatur als auch mit dem Computer fest verbunden ist.
- Versuchen Sie, die Tastatur an einen anderen USB-Anschluss Ihres Computers anzuschließen.
- Testen Sie die Tastatur an einem anderen Computer, um festzustellen, ob das Problem an der Tastatur oder am ursprünglichen Computer liegt.
- RGB-Beleuchtung funktioniert nicht/ist fehlerhaft:
- Überprüfen Sie die Helligkeitseinstellungen mit Fn + Pfeiltaste nach oben/unten.
- Wechseln Sie durch verschiedene Beleuchtungsmodi mit Fn + \|.
- If using the software, ensure the lighting profiles are correctly applied and the software is up to date.
- Tasten werden nicht registriert/Doppeleingabe:
- This could indicate a faulty switch. Use the switch puller to remove the problematic switch and replace it with a spare or a known good switch.
- Stellen Sie sicher, dass der Schalter vollständig in seiner Fassung eingerastet ist.
- Software Not Recognizing Keyboard:
- Ensure the keyboard is connected directly to the computer (avoiding USB hubs if possible).
- Starten Sie Ihren Computer und die Software neu.
- Reinstall the LTC drive software.
If these steps do not resolve the issue, please contact LTC customer support for further assistance.
7. Spezifikationen
| Besonderheit | Beschreibung |
|---|---|
| Modellnummer | NB681 |
| Layout | 65 % (68 Tasten) |
| Konnektivität | USB Type-C Wired |
| Schalter | Hot-Swappable (3-pin/5-pin MX-style compatible) |
| Hintergrundbeleuchtung | RGB (18 preset modes, 5 brightness/speed levels) |
| USB-Passthrough | 2 x USB 2.0-Anschlüsse |
| Kompatibilität | Windows 7/8/10, iOS, Mac |
| Artikelgewicht | 2 Pfund |
| Maße | 14.96 x 6.14 x 1.92 Zoll |
| Hersteller | LTC |

Figure 7: Comparison of the ultra-compact 68-key design with a full-size keyboard, highlighting its space-saving benefits.

Figure 8: Illustration of the ergonomic design with foldable feet for 10-degree and 5-degree typing angles, and anti-slip pads.
8. Garantie und Support
For detailed warranty information and customer support, please refer to the official LTC webWebsite oder Ihre Kaufdokumentation.
You can also find additional resources and a downloadable PDF user manual here: Offizielles Benutzerhandbuch (PDF)
Weitere Produkte und Support finden Sie unter LTC Store on Amazon.





