1. Introduction
The Rapoo E9050L is an ultra-thin, tri-mode wireless membrane keyboard designed for office and general PC use. It features a compact 78-key layout, long endurance battery, and silent operation. With multi-mode wireless connectivity, it supports Bluetooth 4.0, Bluetooth 5.0, and wireless 2.4G, allowing seamless switching between up to 4 connected devices across Windows and macOS systems.
2. Setup
2.1 Package Contents
Before proceeding, please ensure all items are present in the package:
- Rapoo E9050L Wireless Keyboard
- USB-C Charging Cable
- 2.4G USB Receiver (if applicable to your model)
- User Manual (this document)
2.2 Charging the Keyboard
The keyboard features a built-in 500mAh lithium battery. For initial use, it is recommended to fully charge the keyboard.
- 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).
- The charging indicator light will illuminate. A full charge typically takes about 3 hours.
2.3 Connecting the Keyboard
The E9050L supports three connection modes: 2.4G Wireless, Bluetooth 4.0, and Bluetooth 5.0.
2.3.1 2.4G Wireless Mode Connection
- Insert the RAPOO 2.4G USB receiver into an available USB port on your computer.
- Switch the keyboard's mode switch key to the left position (2.4G mode).
- The keyboard should automatically connect to your device.
2.3.2 Bluetooth Mode Connection
The keyboard can store up to three Bluetooth device pairings (BT1, BT2, BT3).
- Switch the keyboard's mode switch key to the right position (Bluetooth mode).
- Short press the key combination Fn + 1, Fn + 2, or Fn + 3 to select the desired Bluetooth channel (e.g., Fn + 1 for BT1).
- Long press the selected key combination (Fn + 1, Fn + 2, or Fn + 3) for 3-5 seconds to enter Bluetooth pairing mode. The green indicator light on the keyboard will flash continuously.
- On your device (computer, tablet, smartphone), open Bluetooth settings and search for new devices. Select "Rapoo E9050L" from the list.
- Once paired successfully, the green indicator light on the keyboard will turn solid.
- If pairing is not successful within 2 minutes, the green indicator light will go out, and you will need to repeat the pairing process.
3. Operating Instructions
3.1 Switching Between Connected Devices
The E9050L allows fast switching between up to 4 connected devices (1 via 2.4G, 3 via Bluetooth).
- To switch to a 2.4G connected device, move the mode switch key to the left (2.4G mode).
- To switch between Bluetooth devices, ensure the mode switch key is in the right position (Bluetooth mode), then short press Fn + 1, Fn + 2, or Fn + 3 to select the desired paired device.
3.2 Multimedia Shortcut Keys
The keyboard supports dual systems (Windows/macOS) with 12 multimedia shortcut keys accessible via the Fn key.
- Switching System Modes:
- Press Fn + Q to enter macOS system mode.
- Press Fn + W to enter Windows system mode.
- Windows Multimedia Functions (Fn + F-keys):
- Fn + F1: Back
- Fn + F2: Forward
- Fn + F3: Home Page
- Fn + F4: Mailbox
- Fn + F5: Player
- Fn + F6: Play/Pause
- Fn + F7: Stop
- Fn + F9: Next Track
- Fn + F10: Volume Down
- Fn + F11: Volume Up
- Fn + F12: Mute
3.3 AI Key Function (AI Version Only)
If you have purchased the AI version of the keyboard, there is a dedicated AI key. After downloading the corresponding Rapoo driver, pressing this key will quickly invoke the DeepSeek AI model window.
4. Maintenance
To ensure the longevity and optimal performance of your Rapoo E9050L keyboard, follow these maintenance guidelines:
- Cleaning: Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution to wipe the keyboard surface. Avoid harsh chemicals or abrasive materials. For cleaning between keys, use compressed air.
- Battery Care: Avoid exposing the keyboard to extreme temperatures. Charge the keyboard regularly, even if not in constant use, to maintain battery health.
- Storage: When not in use for extended periods, store the keyboard in a dry, cool place away from direct sunlight.
- Avoid Spills: Keep liquids away from the keyboard to prevent damage to internal components.
5. Troubleshooting
5.1 Connection Issues
- Keyboard not connecting:
- Ensure the keyboard is charged.
- Verify the mode switch key is in the correct position (2.4G or Bluetooth).
- For 2.4G mode, ensure the USB receiver is properly inserted into your device.
- For Bluetooth mode, ensure your device's Bluetooth is enabled and try re-pairing the keyboard (refer to Section 2.3.2).
- Try connecting to a different USB port or device to rule out port/device issues.
- Intermittent connection:
- Ensure the keyboard is within the effective range of your device.
- Minimize interference from other wireless devices (e.g., Wi-Fi routers, other Bluetooth devices).
- Check battery level; low battery can affect connection stability.
5.2 Keys Not Responding
- Check if the keyboard is powered on and connected.
- Ensure the battery is not critically low.
- Gently clean around the affected keys to remove any debris that might be obstructing them.
- Restart your computer/device and reconnect the keyboard.
5.3 Indicator Lights
- Green Indicator Light: Flashes during Bluetooth pairing, solid when connected. Goes out if pairing fails or connection is lost.
- Low Power & Charging Indicator: Indicates battery status. Charge the keyboard when this indicator suggests low power.
6. Specifications
| Feature | Specification |
|---|---|
| Model | E9050L |
| Dimensions | 284mm x 119mm x 13mm |
| Thickness (thinnest point) | 5.3mm |
| Weight | Approx. 292g (excluding receiver) |
| Connection Mode | Bluetooth 5.0, Bluetooth 4.0, Wireless 2.4G |
| Number of Keys | 78 keys |
| Key Stroke | 1.5mm |
| Key Life | 3 million times |
| Operation Style | Membrane |
| Power Supply | Built-in 500mAh Lithium Battery |
| Charging Interface | USB-C |
| Endurance (2.4G) | Approx. 240 hours continuous use |
| Endurance (Bluetooth) | Approx. 260 hours continuous use |
| Keycap Material | PBT plastic |
| Keycap Printing | Dye-sublimation |
| Language | English |
| Application | Desktop, Laptop, Number, Tablet |
7. User Tips
- Optimize Battery Life: Turn off the keyboard using the mode switch key when not in use for extended periods to conserve battery.
- Multi-Device Efficiency: Utilize the multi-device switching feature to quickly transition between your computer, tablet, and smartphone without needing multiple keyboards.
- Ergonomics: Position the keyboard comfortably to reduce strain during long typing sessions. The slim design is intended for ergonomic use.
8. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official Rapoo website or contact your retailer. Keep your purchase receipt as proof of purchase.





