1. Introduction
Thank you for purchasing the Rii I4 Mini Wireless QWERTY Keyboard & Touchpad Combo. This device offers a versatile input solution for various platforms, combining Bluetooth and 2.4GHz wireless connectivity. It is designed for emails, chat, remote control, message input, and gaming, providing an enhanced user experience with its integrated touchpad and scroll wheel.
Key Features:
- Dual Mode Operation: Seamlessly switch between Bluetooth and 2.4GHz wireless connectivity.
- Integrated Touchpad: Features multi-finger functions for intuitive navigation.
- Scroll Wheel: Innovative design for faster and easier scrolling through documents and web pages.
- Backlit Design: Enhances visibility in low-light conditions for comfortable use.
- Wide Compatibility: Compatible with PC, Laptop, Raspberry Pi, Mac OS, Linux, HTPC, IPTV, Google Android Smart TV Box, XBMC, Windows (2000, XP, Vista, 7, 8, 10), Xbox, and PS4.
2. Package Contents
Please check the box for the following items:
- Rii I4 Mini Wireless Keyboard with Touchpad
- USB Charging Cable
- USB Receiver (stored inside the keyboard's battery compartment)
- User Manual (this document)

3. Product Overview
Familiarize yourself with the layout and components of your Rii I4 keyboard:

Key Components:
- Power Switch: Located on the side for turning the device ON/OFF.
- Direction Keys: For navigation.
- Touchpad: For mouse cursor control and multi-finger gestures.
- Multi-media Buttons: Dedicated buttons for media control.
- Scroll Wheel: Red button on the right side for scrolling.
- Keyboard Area: QWERTY layout for typing.
- Charging Port: Located on the side for connecting the USB charging cable. (Note: Newer models may feature USB-C, while older models use MicroUSB).
- USB Receiver Compartment: Located on the back, housing the 2.4GHz USB receiver.
4. Specifications
| Feature | Detail |
|---|---|
| Receiver (dongle) | Nano style |
| Connection Port | USB2.0 or above |
| Transmission Mode | Bluetooth + (RF) 2.4GHz wireless technology |
| Bluetooth Version | Bluetooth 4.0 |
| Transmission Power | ±5db |
| Power Supply | BL-5B 700mAh |
| Charging Voltage | 4.7V - 5.25V |
| Charging Current | 300mA |
| Sleeping Current (Class 1) | 135uA |
| Operation Voltage | 3.7V |
| Operating Current | <75mA |
| Product Weight | 112.5g |
| Product Size | 155*89*16.5mm (6.1 x 3.5 x 0.65 inches) |
| Keycup Material | ABS Plastic |
| Keycup Printing | Pad printing |
| Operation Style | MEMBRANE |

5. Setup and Installation
The Rii I4 keyboard supports both 2.4GHz wireless and Bluetooth connectivity.
5.1. 2.4GHz Wireless Installation
- Retrieve the USB Receiver: Open the battery compartment cover on the back of the keyboard and take out the USB receiver.

Image: Removing the USB receiver from the keyboard's back compartment. - Plug in the Receiver: Plug the USB receiver into an available USB port on your device (e.g., PC, Smart TV, Android TV Box).

Image: Plugging the USB receiver into a device's USB port. - Switch to 2.4G Mode: Turn on the keyboard. Press
Fn+Capskeys simultaneously to switch to 2.4G mode. The green indicator light will turn solid to indicate a successful connection.
2.4G Pairing Troubleshooting:
If the green LED flashes instead of staying solid, it means the keyboard is not paired. Follow these steps:
- Press
Fn+Ctrlkeys simultaneously. The green LED will flash fast. - Plug the USB dongle into your device. The flashing green LED should become solid within 60 seconds upon successful pairing.
Ensure the keyboard is fully charged before attempting to pair. The default mode when the keyboard powers on is 2.4G. It will switch to Bluetooth mode if it doesn't detect a receiver within approximately nine seconds.
5.2. Bluetooth Installation
- Switch to Bluetooth Mode: Turn on the keyboard. Press
Fn+Tabkeys simultaneously to switch to Bluetooth mode. A blue LED will turn solid, indicating the keyboard is ready for pairing.
Image: Steps for Bluetooth pairing, including pressing Fn+Tab and connecting to 'i4' on your device. - Pair with your Device: On your device, open Bluetooth settings, search for "i4" keyboard, and click to connect.
Bluetooth Pairing Tip:
To initiate a fast pairing mode, long press Fn + Ctrl for two seconds. The blue light will flash rapidly. Then, repeat step 2 to connect.
6. Operating Instructions
6.1. LED Indicators

- Blue/Green LED: Blue light indicates Bluetooth mode, green light indicates 2.4G mode. If the keyboard is not connected, this light flashes slowly. If the battery is low, this light will flash.
- White LED: Indicates Caps Lock status.
- Red LED: Indicates charging status. It is on while charging and turns off when fully charged.
6.2. Multi-finger Touchpad Functions

- Single-finger click: Functions as a left mouse click.
- Two-finger click: Functions as a right mouse click.
- Two-finger dragging: Functions as mouse scrolling.
- Single-finger sliding: Functions as a pointer.
Adjust Touchpad Speed: Press Fn + Space to adjust the touchpad DPI sensitivity. Two DPI sensitivity options are available.
6.3. Scroll Wheel
The dedicated scroll wheel (red button) allows you to scroll through long documents or web pages faster and easier, similar to using a traditional mouse wheel. Alternatively, you can use two fingers to touch and move on the touchpad to achieve scrolling functionality.
6.4. Shortcut Keys
The keyboard includes various FN key combinations for quick access to functions:
| Combination | Function | Combination | Function |
|---|---|---|---|
FN + ESC | F1 | FN + 1 | F2 |
FN + 2 | F3 | FN + 3 | F4 |
FN + 4 | F5 | FN + 5 | F6 |
FN + 6 | F7 | FN + 7 | F8 |
FN + 8 | F9 | FN + 9 | F10 |
FN + 0 | F11 | FN + ~ | F12 |
FN + J | Previous track | FN + K | Play / Pause |
FN + L | Next track | FN + ENTER | CTRL + ALT + DEL |
FN + Tab | Bluetooth Mode | FN + Caps | 2.4G Mode |
FN + Space | Overdrive the mouse | FN + F2 | ON/OFF Backlight |
6.5. Auto Sleep and Wake-up Feature
The keyboard is equipped with an auto sleep function to conserve battery life. If there is no operation for approximately 3 minutes, the keyboard will automatically enter sleep mode, and all LED indicators will turn off. To wake up the keyboard, simply press any button.
6.6. Switching Off the Keyboard
After use, push the power switch to the "OFF" position to completely turn off the keyboard and save battery. The USB receiver does not need to be removed from your device; it can remain plugged in for future use.
7. Maintenance and Charging
7.1. Charging the Battery
The Rii I4 keyboard uses a built-in lithium-ion battery. Please use only approved USB cables and chargers. It is recommended to fully charge the unit before initial operation. The keyboard can be used while charging, but this may extend the charging time.
When the battery is low, the blue/green LED indicator will blink to warn you. The unit will automatically turn off if the battery is completely depleted.
Important Charging Notes:
- The provided USB cable is for charging only and cannot be used for data transfer.
- Always disconnect the charging cable once the battery is fully charged to prevent overcharging.
- Overcharging can shorten the battery life.
7.2. General Maintenance
- Do not attempt to disassemble the device or replace the rechargeable battery yourself, unless it is the easily replaceable BL-5B battery type.
- The battery will naturally discharge if stored for a long time without operation.
- Keep this device away from fluids, such as water.
- Clean the keyboard with a soft, dry cloth. Avoid harsh chemicals or abrasive materials.
7.3. Disposal
Always dispose of the used appliance at a recycling center. Do not dispose of the used appliance together with household waste.
8. Troubleshooting
- Keyboard not connecting (2.4G): If the green LED flashes, try the 2.4G pairing troubleshooting steps in Section 5.1. Ensure the USB receiver is securely plugged in and there are no obstacles between the keyboard and the receiver.
- Keyboard not connecting (Bluetooth): If the blue LED flashes, try the Bluetooth pairing tip in Section 5.2. Ensure Bluetooth is enabled on your device and the keyboard is in Bluetooth mode.
- Signal Interference: When working with devices like Android TV boxes or Smart TVs, large monitors may cause signal interference, leading to short range or unresponsive buttons. Try moving the USB receiver from the back of your device to a front USB port, then re-pair and use the keyboard.
- Keyboard unresponsive: Ensure the keyboard is charged. If the battery is low, the blue/green LED will flash. Charge the keyboard fully.
- Backlight not working: Ensure the backlight is turned on using
FN+F2. The backlight automatically turns off after 1 minute of inactivity.
9. User Tips
- Battery Replacement: The BL-5B battery is replaceable without full disassembly, making it easy to extend the life of your keyboard.
- USB-C Charging: Be aware that newer production units of the Rii I4 may feature a USB-C charging port instead of MicroUSB.
- Accidental Clicks: The left/right click buttons (bumpers) can be easy to accidentally press. Be mindful of your grip during use.
- Scroll Wheel Speed: The scroll wheel is smooth but may operate slower than a typical desktop mouse.
- Language Input: For Windows 10 (Japanese layout), input language can be altered by pressing
AltGrand the tilde key (left of the Del key) simultaneously. - Additional FN Functions:
Fnkey plus the arrow D-pad can provide Home, End, Page Up, and Page Down functions.
10. Frequently Asked Questions (FAQ)
- Q: What type of charging port does the Rii I4 use?
- A: The Rii I4 typically uses a MicroUSB port for charging. However, some newer production units have been updated to use a USB-C port.
- Q: Is the battery replaceable?
- A: Yes, the Rii I4 uses a BL-5B battery which is designed to be replaceable without requiring full disassembly of the device.
- Q: How do I know if the keyboard is fully charged?
- A: The red LED indicator will be on while charging and will turn off once the battery is fully charged.
- Q: Can I use the keyboard while it's charging?
- A: Yes, the keyboard can be used while charging, but the charging time may be extended.
11. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.
12. FCC Notice
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
- This device may not cause harmful interference.
- This device must accept any interference received, including interference that may cause undesired operation.
Note 1: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Note 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.