EPOMAKER EK21 VIA Gasket Number Pad User Manual

1. Product Overview

The EPOMAKER EK21 VIA Gasket Number Pad is a versatile, hot-swappable, and programmable numeric keypad designed to enhance productivity and gaming experiences. It features triple connectivity modes (Bluetooth 5.0, 2.4GHz wireless, and wired USB-C) and customizable RGB backlighting.

Key Features:

• Gasket Structure: Provides a cushioned and comfortable typing experience.
• VIA Programmable: Customize key assignments, macros, and lighting effects.
• Triple Connectivity: Seamlessly switch between wired, 2.4GHz wireless, and Bluetooth 5.0.
• Hot-Swappable PCB: Compatible with 3/5-pin mechanical switches for easy customization.
• RGB Backlighting: Per-key RGB lighting with various effects.
• Aluminum Alloy Knob: For refined control over media or other functions.
• 1000mAh Battery: Long-lasting power for wireless use.

Package Contents:

• EPOMAKER EK21 VIA Numpad
• USB-C Cable (1.8m braided)
• 2.4G Receiver
• User Manual
• Switch Puller

Image: EPOMAKER EK21 Numpad with included accessories and packaging.

2. Setup

Physical Overview:

Image: Front view of the EPOMAKER EK21 VIA Numpad.

Image: Side view of the EK21 Numpad, illustrating the connectivity switch and USB-C port.

Image: Dimensions of the EK21 Numpad (141mm x 96mm x 32mm/21mm).

Replacing Keycaps and Switches:

The EK21 features a hot-swappable PCB, allowing you to easily change switches without soldering. Use the included tools for this process.

Image: EK21 Numpad with keycaps removed, revealing the hot-swappable switches.

Removing Switches:

1. Grab your Switch Removal Tool and align the gripping teeth vertically (on the Y-Axis) at the center of the switch.
2. Grab the switch with the Switch Puller and apply pressure until the switch releases itself from the plate.
3. Using firm but gentle force, pull the switch away from the numpad using a vertical motion.

Installing Switches:

1. Check that all the switch metallic pins are perfectly straight and clean.
2. Align the switch vertically to have the Gateron logo facing north. The pins should align themselves to the keyboard PCB.
3. Press the switch down until you hear a click. This means your switch clips have attached themselves to the keyboard plate.
4. Inspect the switch to ensure it's properly attached to your numpad, and test it.

Note: If a key doesn't work, it's possible you may have bent one of the switches during installation. Pull the switch out and repeat the process. Pins may be damaged beyond repair if this process is not done correctly. Never apply excessive force when replacing keycaps or switches. If you cannot remove or install keycaps or switches, please contact customer service as soon as possible to avoid damage due to operating errors.

Image: Visual guide for installing and removing mechanical switches.

3. Operating Instructions

Connectivity Modes:

The EK21 supports three modes: Wired, Bluetooth, and 2.4GHz Wireless. Use the switch on the side of the numpad to select your desired mode.

Image: Connectivity modes (2.4GHz, BT, Wired) indicated on the EK21 Numpad.

Wired Mode:

Toggle the switch to the middle position. Connect the numpad to your device using the provided USB-C cable. The numpad will automatically enter wired mode.

Bluetooth Pairing:

1. Toggle the switch to the left (Bluetooth mode).
2. Hold Fn + 1, Fn + 2, or Fn + 3 for 3-5 seconds until the corresponding key indicator flashes fast in blue. The numpad is now ready to pair.
3. On your Bluetooth device, find 'Epomaker EK21-1', 'Epomaker EK21-2', or 'Epomaker EK21-3' and connect. The indicator will stop flashing once connected.
4. Press Fn + 1/2/3 to toggle between paired Bluetooth devices.

2.4GHz Wireless Pairing:

1. Toggle the switch to the right (2.4GHz mode).
2. Hold Fn + 4 for 3-5 seconds until the '4' key indicator flashes fast in green. The numpad is ready to pair.
3. Insert the 2.4G dongle into your device. The indicator will stop flashing once connected.

Battery Indicator:

• Low battery: Fn indicator flashes red.
• Charging: Fn indicator stays red.
• Fully charged: Fn indicator turns off.

Note: The battery charges in both wireless and wired modes as long as it is plugged in.

Function Key Combinations:

VIA Programming:

The EK21 is VIA programmable, allowing for extensive customization of keymaps, macros, and lighting. Follow these steps to use VIA software:

1. Download VIA Software: Visit https://github.com/WestBerryVIA/via-releases/releases to download the latest VIA application for your computer's OS. Ensure you turn on the button for "Use V2 definitions (deprecated)".
2. Import JSON File to VIA:
   • For Wired Mode: Download the Epomaker EK21 USB JSON file from https://epomaker.com/blogs/qmk-via/epomaker-ek21-usb-via-json and load it into VIA.
   • For 2.4GHz Mode: Download the Epomaker EK21 2.4G JSON file from https://epomaker.com/blogs/qmk-via/epomaker-ek21-24g-via-json and load it into VIA.
3. Once loaded, the "Configure" tab in VIA will display the layout and programmable functions, allowing you to customize your numpad.

Image: The EK21 Numpad being programmed via the VIA software interface on a laptop.

4. Specifications

5. Troubleshooting

Common Issues & Solutions:

• Key not working after switch installation: Ensure switch pins are straight and clean before insertion. If a pin is bent, carefully straighten it and re-insert the switch.
• Connectivity problems: Double-check the mode switch (Wired, 2.4GHz, BT). For wireless modes, ensure proper pairing as described in the Operating Instructions. For 2.4GHz, verify the dongle is securely inserted. For Bluetooth, ensure your device's Bluetooth is on and the correct EK21 profile is selected.
• Backlighting issues: Use the Fn key combinations (Fn + Enter, Fn + +, Fn + -, etc.) to adjust backlight effects, brightness, and hue.
• VIA software not detecting numpad: Ensure the correct JSON file for your connection mode (wired or 2.4GHz) is loaded in VIA. Also, confirm the numpad is connected in the corresponding mode.

Frequently Asked Questions (FAQ):

• Does it support profile configuration for macros? Yes, the EK21 is VIA programmable, allowing you to configure multiple profiles and macros.
• How long does the battery last on 2.4G? Battery life can vary depending on usage and RGB lighting. The 1000mAh battery is designed for extended use.

6. User Tips

• Customize with VIA: Take full advantage of the VIA software to personalize your numpad. Remap keys for specific applications, create complex macros for repetitive tasks, and fine-tune RGB lighting to match your setup.
• Experiment with Switches: Since the EK21 is hot-swappable, don't hesitate to try different mechanical switches to find the feel that best suits your typing or gaming style.
• Optimize Connectivity: Use 2.4GHz wireless for low-latency gaming, Bluetooth for general productivity across multiple devices, and wired mode for stable, uninterrupted connection and charging.

7. Warranty and Support

Warranty Information:

EPOMAKER's Warranty covers any factory defects that might affect the proper functionality of your purchase. It does not cover any damage that may occur from normal wear and tear. If your product is defective, a replacement unit will be provided. Replacement units might require you to send the defective unit back to Epomaker.

A 1-year warranty is provided for products bought from the official EPOMAKER website (EPOMAKER.com). This warranty does not cover modifications or changes unsupported by the original product, including: changing internal components, assembling and reassembling the product, or replacing batteries.

Warranty coverage is only applicable if the item is bought from official stores. If purchased from another reseller, please contact that store directly for assistance.

Technical Assistance:

For technical assistance, please email support@epomaker.com with your purchase order number and a detailed description of your issue. EPOMAKER typically responds to inquiries within 24 hours.

If you purchased your numpad from a distributor or a non-official Epomaker store, please contact them directly for any additional help.

8. Product Video