AULA F75 setup and troubleshooting guide

Product Overview

The AULA F75 three modular wired+2.4G+Bluetooth mechanical keyboard is an 80-key layout board that combines three connection modes with onboard lighting and shortcut controls. This guide is based strictly on AULA’s official documentation for the F75. If you are switching between a desktop, laptop, and mobile device, the multi-mode design helps you move between setups without changing keyboards.

In the official feature list, the keyboard includes a physical mode toggle, a USB Type-C interface, a 2.4G receiver with storage space in the keyboard, and a multifunction wheel. The documentation also describes a gasket structure, hot-swappable base support for replacing switches/keycaps, and full-key anti-ghosting so multiple simultaneous key presses still register as expected.

Best suited for:

• Users who want to switch between USB-C wired, 2.4G, and Bluetooth connections on the same keyboard.
• Setups that benefit from fast access to lighting effects, volume, and multimedia shortcuts using FN combinations and the multifunction wheel.
• People who plan to customize later, since the documentation states the base is hot-swappable and keycaps/switches can be replaced.

Consider alternatives if:

• You need a single wireless mode only and do not want to manage channels or pairing modes.
• You require a higher Bluetooth polling rate than the value listed in the documentation for Bluetooth mode.

Knowledge value: The manual mixes short-press and long-press actions for pairing and mode behavior. Treat anything described as a 3-second press as a deliberate state change (pairing/reset), not a normal shortcut, so you do not accidentally wipe saved Bluetooth pairing or re-enter pairing while typing.

What’s in the Box

This topic is not covered in the official product documentation. For details, contact the manufacturer directly.

Installation Instructions

To install the AULA F75 for first use, choose one connection mode and complete its matching setup steps so the keyboard can power on and communicate reliably. The documentation shows separate workflows for wired and 2.4G, plus a pairing workflow for Bluetooth. Starting with the correct mode prevents failed pairing attempts and avoids confusing indicator lights.

1. Decide how you want to connect: USB-C wired, 2.4G with the receiver, or Bluetooth.
2. Set the keyboard’s physical toggle to the matching mode (the documentation describes a toggle that selects 2.4G/wired/OFF on one side and Bluetooth on the other).
3. For USB-C wired: insert the Type-C end into the keyboard, then connect the USB end to a computer USB port.
4. For 2.4G: remove the USB receiver from its storage space in the keyboard, then plug it into the computer’s USB port.
5. For Bluetooth: switch to Bluetooth mode, then use the channel key combination described in the manual to enter pairing for channel 1, 2, or 3.

Tip: After installation, press and hold FN to display the current connection mode, Bluetooth channel, and system mode using the keyboard’s indicator mapping, then release FN to return to normal lighting.

How to Use AULA F75 three modular wired+2.4G+Bluetooth mechanical keyboard

Use the keyboard by selecting the correct connection mode, then confirming the active channel or receiver link before you start typing. In wired mode, a USB connection provides stable communication; in 2.4G mode, the receiver handles the wireless link; and in Bluetooth mode you pair and switch between up to three device channels. Once connected, the FN layer and the multifunction wheel provide quick control over lighting and media functions.

Use USB-C wired mode

USB-C wired mode connects the keyboard directly to a computer for consistent input and the highest listed polling rate in the documentation. It also simplifies troubleshooting because there is no pairing state to manage. The manual also notes that when the switch is set to wired without USB power supply, the keyboard turns off and the built-in battery stops supplying power.

• Set the toggle to wired.
• Connect the keyboard with a USB cable: Type-C to the keyboard and USB to the computer.
• If the keyboard does not respond, confirm the computer USB port is providing power and the toggle is not in an off position.

Use 2.4G wireless mode

2.4G mode uses a USB receiver for a low-latency wireless connection, and the manual lists the same polling rate as wired mode. This is the best fit when you want wireless use without Bluetooth pairing menus. If the receiver is not recognized, the manual describes a manual code pairing method that uses a 3-second key hold to force the keyboard into a 2.4G search state.

• Set the toggle to 2.4G mode.
• Insert the USB receiver into the computer’s USB port.
• If needed, follow the manual’s 2.4G pairing method (including the 3-second pairing key hold) until the receiver indicator behavior matches the success state described in the documentation.

Use Bluetooth mode and switch devices

Bluetooth mode lets the keyboard connect to compatible phones, tablets, and computers, and the manual describes three channels for device switching. To pair, you switch to Bluetooth mode, then press-and-hold the channel combination for about 3 seconds to enter pairing, where the channel indicator flashes rapidly until a device connects. After pairing, a short press of the same channel combination switches between paired devices.

• Set the toggle to Bluetooth mode.
• Press and hold the documented channel combination for BT1, BT2, or BT3 for about 3 seconds to enter pairing.
• On your device, search for the pairing name shown in the manual (the documentation lists names such as AULA-F75 3.0 and AULA-F75 5.0 depending on platform and Bluetooth version).
• After successful pairing, use a short press of the same channel combination to switch devices.

Switch system mode for key mapping

System mode switching changes how certain keys behave so shortcuts match your platform. The manual shows three system selections using FN combinations: Android, Windows, and Mac. Selecting the correct mode helps prevent mismatched modifier behavior when moving between devices.

• FN + Q: Android system.
• FN + W: Windows system.
• FN + E: Mac system.

Adjust backlight effects and brightness

Lighting control uses FN plus shortcut keys and the wheel so you can change effects without software. The manual lists multiple RGB effects, including modes such as wave, constant light, breathing, and a lighting-off state. It also notes that with the driver, a music rhythm RGB effect becomes available with additional effect choices.

• Use the documented FN lighting shortcuts to toggle lighting mode, switch colors, adjust brightness, and change effect speed.
• Use the listed backlight effect combinations and wheel actions to cycle effects and reach the lighting pattern you want.
• If you want no lighting, select the off state described in the manual’s lighting list.

Use the multifunction wheel in game and office modes

The multifunction wheel changes behavior depending on the keyboard’s selected wheel mode. The manual describes two wheel modes: game mode (focused on lighting changes) and office mode (focused on multimedia volume/mute). A long press on the mode button switches between these modes, and a short press performs the primary action for the current mode.

• Long press the mode button to switch between game mode and office mode.
• In game mode: short press cycles lighting effects; turn the knob clockwise for brightness up and counterclockwise for brightness down.
• In office mode: short press performs the multimedia function (mute); turn the knob clockwise for volume up and counterclockwise for volume down.

Expert Tips

These tips help you use the AULA F75 features the way the documentation intends, especially when you are switching modes or diagnosing connection state. Each tip is based on documented shortcuts and indicator behaviors rather than guesswork. Using the built-in indicators reduces trial-and-error when pairing or switching systems.

• Use the status view before troubleshooting: press and hold FN to display the active connection mode, Bluetooth channel, and system mode via the keys the manual maps to those indicators.
• Reserve 3-second presses for pairing and reset actions: the manual uses long presses for entering pairing/search states and restoring defaults, so avoid holding those combinations during normal typing.
• Pick the right wheel mode first: if you expect volume control but the wheel changes lighting, long press the mode button to return to office mode as described in the documentation.

Technical Specifications

The following specifications are taken from the product parameters and feature descriptions in the official documentation and focus on values that affect setup and daily operation.

Safety Warnings

Charging and power guidance focuses on preventing overheating, port damage, and battery stress during charging. The manual emphasizes avoiding incompatible or poor-quality adapters and avoiding extreme environments while charging. Follow these warnings to reduce the risk of electrical damage or shortened battery life.

• Warning: Electrical hazard – use a recommended USB port or a suitable adapter to charge the keyboard, and do not use fast-charging phone adapters if the documentation advises against it.

• Electrical hazard – do not use inferior or non-standard power adapters to charge the keyboard.
• Electrical hazard – do not use over-voltage or over-current power adapters.
• Heat hazard – keep away from high-temperature environments while charging.
• Device safety – if you do not use the product for a long time, follow the manual’s guidance to disconnect power appropriately.

Troubleshooting

If the AULA F75 does not connect or behave as expected, start by confirming the selected mode and then use the documented pairing or reset shortcuts for that mode. The manual provides specific long-press actions for Bluetooth pairing, 2.4G search/pairing, and factory reset, which are the safest fixes to try before assuming hardware failure.

Maintenance and Care

The manufacturer does not provide details about this topic in the official documentation.

Next Steps

After you finish initial setup, confirm the keyboard is in the correct connection mode and system mode, then save your preferred lighting and wheel behavior for daily use. If you use multiple devices, pair Bluetooth channels 1-3 deliberately and label them in your own notes so switching stays predictable. For warranty coverage and service terms, keep the purchase record and refer to the included warranty information from AULA.

About the Author

User Manual X

usermanualx.com Editorial Team

We research product documentation and create structured setup guides, troubleshooting references, and specification summaries to help users get the most out of their devices.

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