ProtoArc K90-A Backlit Compact Wireless Keyboard for Mac User Manual

Introduction

This manual provides comprehensive instructions for the ProtoArc K90-A Backlit Compact Wireless Keyboard. Please read this manual thoroughly before using the product to ensure proper operation and to maximize its features. This keyboard is designed for use with Mac, MacBook Pro/Air, iPad, and iPhone devices.

Important Note:

• Devices manufactured before 2013 or running macOS versions below 10.12 are not supported.
• Not compatible with Linux, Windows, or Windows installed on Mac hardware.
• This device is not a wired keyboard. The accompanying cable is for charging purposes only.

Image: ProtoArc K90-A Backlit Compact Wireless Keyboard. This image displays the overall design of the keyboard, highlighting its compact layout and backlit keys.

Package Contents

Verify that all items are present in the package:

• 1 x Bluetooth Keyboard
• 1 x Type-C Charging Cable
• 1 x User Manual (this document)

Setup

1. Charging the Keyboard

Before initial use, fully charge the keyboard. The charging cable is located in the upper right corner of the compartment inside the box.

• Connect the provided USB-C charging cable to the keyboard's charging port.
• Connect the other end of the cable to a USB power source (e.g., computer USB port, USB wall adapter).
• A full charge typically takes 3-4 hours.
• The keyboard has a built-in 1200mAh rechargeable battery.

Image: Close-up of the USB-C charging port on the ProtoArc K90-A keyboard, illustrating where to connect the charging cable. The image also shows battery life indicators like standby time and charging duration.

2. Powering On/Off

Locate the power switch on the side of the keyboard. Slide it to the "ON" position to power on and "OFF" to power off.

3. Bluetooth Pairing

The ProtoArc K90-A keyboard supports multi-device connectivity via three Bluetooth channels. You can connect up to three devices simultaneously and switch between them.

1. Ensure the keyboard is charged and powered on.
2. On your Mac, iPad, or iPhone, navigate to System Settings (or System Preferences on older macOS versions) > Bluetooth. Ensure Bluetooth is enabled.
3. Press the Fn key simultaneously with one of the Bluetooth channel keys (Q, W, or E) for 3-5 seconds until the corresponding indicator light flashes rapidly. This indicates the keyboard is in pairing mode.
4. On your device, select "ProtoArc K90-A" from the list of available Bluetooth devices.
5. Follow any on-screen prompts to complete the pairing process.
6. Repeat these steps for up to two additional devices, using a different channel key (Q, W, or E) for each device.

Image: The ProtoArc K90-A keyboard positioned on a desk, wirelessly connected to a MacBook, iPad, and iPhone, demonstrating its multi-device Bluetooth capability. Bluetooth icons indicate active connections.

Image: A multi-panel image showing key features: low-profile key stroke, compact layout, backlight button, on/off button, USB-C charging port, and the process for Bluetooth connection (Fn + Q/W/E for pairing). Also shows the included protective cover.

Operating Instructions

1. Switching Between Devices

Once paired with multiple devices, you can switch between them by pressing the Fn key along with the corresponding channel key (Q, W, or E) that the device is paired to. The switch is instant.

2. Backlight Control

The keyboard features three adjustable soft white LED brightness levels.

• Press the Backlight key (usually indicated by a sun icon or similar) to cycle through the brightness levels (Low, Medium, High, Off).
• The backlight will automatically turn off after a period of inactivity to conserve battery. Press any key to reactivate it.

Image: A close-up view of the ProtoArc K90-A keyboard keys, showing the soft white backlighting in action. The image also indicates the three adjustable brightness levels.

3. Multimedia and Function Keys

The top row of keys serves as both standard function keys (F1-F12) and multimedia control keys. To use the multimedia functions, press the Fn key simultaneously with the desired function key.

Image: A diagram of the ProtoArc K90-A keyboard highlighting the multimedia function keys (F1-F12) and the multi-device switching keys (Q, W, E) used in conjunction with the Fn key.

Maintenance

1. Cleaning

• Use a soft, lint-free cloth to wipe the surface of the keyboard.
• For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner.
• Avoid using harsh chemicals, solvents, or abrasive materials.
• Ensure no liquid enters the keyboard.
• The keyboard comes with a thin silicone dust cover. Use it to protect the keys from dust and spills when not in use.

2. Battery Care

• To prolong battery life, avoid fully discharging the keyboard frequently.
• If the keyboard will not be used for an extended period, charge it to about 50% and store it in a cool, dry place.
• The keyboard enters sleep mode after 60 minutes of inactivity to conserve energy. Press any key to awaken it.

Troubleshooting

Keyboard Not Connecting/Pairing

• Check Power: Ensure the keyboard is powered on and has sufficient battery charge.
• Bluetooth On: Verify that Bluetooth is enabled on your Mac, iPad, or iPhone.
• Pairing Mode: Make sure the keyboard is in pairing mode (Fn + Q/W/E, indicator light flashing).
• Forget Device: If previously paired, try "forgetting" the keyboard in your device's Bluetooth settings and then re-pairing.
• Restart Devices: Restart both the keyboard and your host device (Mac, iPad, iPhone).
• Compatibility: Confirm your device meets the compatibility requirements (macOS 10.12 or above, not Windows/Linux).

Keys Not Responding

• Battery Level: Check if the keyboard battery is low. Charge it if necessary.
• Connection: Ensure the keyboard is actively connected to your device. Try switching Bluetooth channels.
• Clean Keys: Inspect for any debris under the keys.

Backlight Not Working

• Battery Level: Low battery can disable backlighting. Charge the keyboard.
• Activate Backlight: Press the Backlight key to ensure it's not turned off or at the lowest setting.
• Inactivity: The backlight turns off after 60 minutes of inactivity. Press any key to reactivate.

Specifications

Image: A side view of the ProtoArc K90-A keyboard, illustrating its sleek and flat design with measurements of 0.55 inches at its thickest point and 0.31 inches at its thinnest.

Image: A top-down view comparing the compact size of the ProtoArc K90-A keyboard (K90-A) with a larger keyboard (K110-A) and an 11-inch iPad, demonstrating its space-saving design.

Warranty and Support

ProtoArc products are designed for reliability and performance. For warranty information and technical support, please refer to the official ProtoArc website or contact their customer service directly.

For further assistance, please visit the ProtoArc Store on Amazon.