Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your ProtoArc KM90-A Backlit Compact Bluetooth Keyboard and Mouse. Designed specifically for Mac devices, this combo offers multi-device connectivity and an enhanced typing experience. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.
Important Safety Information
- Keep the device away from water, fire, and high temperatures.
- Do not attempt to disassemble or modify the device.
- Use only the provided charging cable or a certified equivalent.
- Avoid dropping or subjecting the device to strong impacts.
- Keep out of reach of children.
Package Contents
- ProtoArc KM90-A Backlit Compact Bluetooth Keyboard
- ProtoArc Wireless Bluetooth Mouse
- USB-C Charging Cable
- Silicone Keyboard Cover
- User Manual

Product Overview
Keyboard Layout

- Fn + Q/W/E: Switch between Bluetooth devices 1, 2, and 3.
- F1-F12: Multimedia and function keys (e.g., brightness, volume, media control).
- Backlight Button: Adjust backlight brightness levels.
- On/Off Switch: Located on the side of the keyboard.
- USB-C Charging Port: Located on the side for charging.
Mouse Features

- DPI Button: Adjusts mouse sensitivity (1000/1600/2400 DPI).
- Channel Switch Button: Located on the bottom to switch between 3 Bluetooth devices.
- Power Switch: On/Off switch on the bottom.
- Type-C Charging Port: Located on the front for charging.
Setup Guide
1. Charging the Devices
Before first use, ensure both the keyboard and mouse are fully charged. Use the provided USB-C cable to connect the devices to a power source (e.g., computer USB port, USB wall adapter).
- Keyboard: Built-in 1200mAh rechargeable battery.
- Mouse: Built-in 500mAh rechargeable battery.
- Charging Time: Approximately 3-4 hours for a full charge.
- Note: The provided cable is for charging only and does not support wired data transmission.

2. Bluetooth Pairing
The ProtoArc KM90-A supports connection to up to three Bluetooth-enabled Mac devices.
- Turn On Devices:
- Flip the power switch on the side of the keyboard to "ON".
- Flip the power switch on the bottom of the mouse to "ON".
- Enter Pairing Mode:
- For Keyboard: Press and hold the Fn key and one of the Bluetooth channel keys (Q, W, or E) for 3-5 seconds until the corresponding indicator light blinks rapidly.
- For Mouse: Press the "Channel Switch Button" on the bottom of the mouse to select a channel (1, 2, or 3). Then, press and hold the same channel button for 3-5 seconds until the indicator light blinks rapidly.
- Connect on Mac Device:
- On your Mac, MacBook, iPad, or iPhone, go to System Settings (or Settings on iOS/iPadOS) > Bluetooth.
- Ensure Bluetooth is enabled.
- Look for "ProtoArc KM90-A" (for keyboard) and "ProtoArc Mouse" (for mouse) in the list of nearby devices.
- Click or tap "Connect" next to each device. The indicator light will stop blinking and remain solid once connected.
Repeat the pairing process for other devices using different Bluetooth channels (Q/W/E for keyboard, 1/2/3 for mouse).
Compatibility Notes:
- Compatible with MacBook Pro, MacBook Air, iPad, iPhone, Mac, Mac Mini.
- Requires macOS versions 10.12 or above. Devices manufactured before 2013 may not be supported.
- Not compatible with Linux, Windows, or Windows installed on Mac hardware.
Operating Instructions
1. Keyboard Operation
- Backlighting: Press the backlight key (usually F1 or a dedicated key with a light icon) to cycle through three soft white LED brightness levels. This helps reduce eye strain in various lighting conditions.
- Multimedia Keys: Use the F1-F12 keys for quick access to functions like screen brightness, Mission Control, Launchpad, media playback, and volume control.
- Multi-Device Switching: To switch between connected devices, simply press Fn + Q (Device 1), Fn + W (Device 2), or Fn + E (Device 3). The switch is seamless and instant.
- Sleep Mode: The keyboard enters sleep mode after 60 minutes of inactivity to conserve energy. Press any key to wake it up. Backlighting may require manual reactivation.


2. Mouse Operation
- DPI Adjustment: Press the DPI button (located near the scroll wheel) to cycle through 1000, 1600, and 2400 DPI settings. This allows you to customize cursor sensitivity for precise control.
- Multi-Device Switching: Use the "Channel Switch Button" on the bottom of the mouse to select the desired Bluetooth channel (1, 2, or 3) corresponding to your paired device.
- Silent Clicks: The mouse features silent click buttons for a quiet working environment.

Maintenance
- Cleaning: Use a soft, dry cloth to clean the keyboard and mouse. For the keyboard, the included silicone cover can be removed and cleaned with mild soap and water. Ensure devices are powered off before cleaning.
- Storage: Store the devices in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the devices frequently. Charge them regularly, especially if not used for extended periods.

Troubleshooting
| Problem | Solution |
|---|---|
| Device not connecting via Bluetooth. |
|
| Keyboard backlight not working. |
|
| Mouse cursor movement is erratic or slow. |
|
| Cannot switch between multiple devices. |
|
Specifications
| Feature | Detail |
|---|---|
| Model Number | KM90-A |
| Connectivity | Bluetooth |
| Compatible Devices | MacBook, MacBook Pro, MacBook Air, iPad, iPad Air, iPad Mini, iPad Pro, iPhone, Mac, Mac Mini (macOS 10.12 and above) |
| Keyboard Battery | 1200mAh Rechargeable |
| Mouse Battery | 500mAh Rechargeable |
| Mouse DPI Levels | 1000/1600/2400 |
| Special Features | Backlit Keyboard, Hotkeys and Media Keys, Compact Layout, Multi-Device Connectivity (3 channels), Quiet Keys/Clicks |
| Dimensions (Keyboard) | 28.6cm x 12.1cm x 1.4cm (11.2in x 4.7in x 0.5in) |
| Dimensions (Mouse) | 10.7cm x 5.8cm x 3.1cm (4.2in x 2.2in x 1.2in) |
| Item Weight | 1.72 pounds (combined) |

Warranty and Support
ProtoArc products are designed for durability and performance. For specific warranty details and support inquiries, please refer to the official ProtoArc website or contact customer service.
Online Support: Visit www.protoarc.com for FAQs, driver downloads, and contact information.
Protection Plans: Extended protection plans may be available for purchase separately. Please check with your retailer for options.





