Lost the USB receiver for a wireless keyboard? First check which case you are in: Bluetooth keyboards can connect directly, most 2.4GHz keyboards still need their matched USB receiver, and WSCOME can help when you are using WBT-V3 / WBT2-V4 or when your keyboard still works as a wired USB keyboard.
If your keyboard is a normal 2.4GHz keyboard from another brand, a random receiver will usually not pair with it. WBT-V3 does not recover that lost receiver system; it converts a wired USB keyboard to Bluetooth or WSCOME 2.4G receiver mode. WBT2-V4 is for using one keyboard and mouse across multiple computers.
Check what type of wireless keyboard you have
| Keyboard type | Can it connect without the original receiver? | What to do |
| Bluetooth keyboard | Yes | Pair it from Windows, macOS, Linux, iPad, or phone Bluetooth settings. |
| 2.4GHz keyboard with USB dongle only | Usually no | You need the original receiver or a compatible replacement from the same brand/system. |
| Dual-mode Bluetooth + 2.4GHz keyboard | Often yes | Use Bluetooth mode if the USB receiver is lost. |
| Wired keyboard with USB mode | Can be converted | Use a wired-keyboard-to-wireless module such as WBT-V3. |
If your keyboard has Bluetooth
A Bluetooth keyboard does not need its own USB receiver. Put the keyboard into pairing mode, open the Bluetooth settings on your computer, and select the keyboard when it appears. If your desktop PC does not have Bluetooth, you can use a USB Bluetooth adapter.
- On Windows, open Bluetooth & devices, then add a new Bluetooth device.
- On macOS, open Bluetooth settings and pair the keyboard from the device list.
- On Linux, use the Bluetooth panel or your desktop environment’s device manager.
If your keyboard is 2.4GHz and the receiver is lost
Most 2.4GHz wireless keyboards cannot connect directly to a computer without their receiver. The USB receiver is not just an antenna. It contains the matching wireless protocol, address, and pairing method for that keyboard. Many brands keep those details private, so a random USB receiver usually will not work.
There are exceptions. Some Logitech keyboards can use Logitech Unifying or Logi Bolt receivers, depending on the exact model. Some brands sell replacement receivers for specific keyboard models.
WSCOME products are different from random 2.4GHz keyboards. If you are using a WBT-V3 or WBT2-V4 system, you can use a matching WSCOME 2.4G receiver and pair it with the module. That receiver is for WSCOME modules, not a universal receiver for every wireless keyboard brand.
Can a universal USB receiver connect any wireless keyboard?
No. A “universal receiver” normally means universal inside one brand or one product family, not universal for every keyboard. A receiver for one 2.4GHz keyboard usually cannot pair with another brand’s keyboard. Even if both use the 2.4GHz band, the pairing protocol can be completely different.
What if the keyboard still has a wired USB mode?
If your keyboard can still work as a wired USB keyboard, you have another option: convert the wired USB keyboard input to wireless. This does not recover the lost original dongle. Instead, it treats the keyboard as a wired keyboard and sends its input through a new wireless module and receiver.
For this use case, WBT-V3 DIY Wired Keyboard to Wireless Conversion Module is the better WSCOME product to consider. It is designed for converting a wired keyboard into a wireless keyboard and can work with the matching 2.4G receiver.
When WBT2-V4 is the better product
If your goal is not only to make one keyboard wireless, but to use one keyboard and mouse with several computers, choose the WBT2-V4 Keyboard and Mouse Switch. WBT2-V4 is for switching keyboard and mouse control across up to 8 computers without software or a shared local network.
Quick troubleshooting checklist
- Look for a Bluetooth symbol or a Bluetooth pairing key on the keyboard.
- Search the exact keyboard model and the word “receiver” or “pairing”.
- Check whether the keyboard supports dual-mode Bluetooth and 2.4GHz.
- If it is Logitech, check whether it uses Unifying, Logi Bolt, or a model-specific receiver.
- If the keyboard still works by USB cable, consider a wired-to-wireless conversion module.
FAQ
Do WBT-V3 and WBT2-V4 need a USB receiver?
Not always. WBT-V3 and WBT2-V4 can work through a matching WSCOME 2.4G receiver, and they can also connect to a computer by Bluetooth. Use 2.4G receiver mode when you want fast switching with paired receivers, and use Bluetooth mode when you want to connect directly to a computer that supports Bluetooth.
Can WBT-V3 or WBT2-V4 connect by Bluetooth without the 2.4G receiver?
Yes. Both WBT-V3 and WBT2-V4 support Bluetooth connection to a computer. The 2.4G receiver is still useful for WSCOME receiver mode, especially for faster switching workflows or computers where you prefer a dedicated receiver instead of Bluetooth pairing.
Can I buy a replacement receiver for WBT-V3 or WBT2-V4?
Yes. WSCOME provides matching 2.4G receivers for WBT-V3 and WBT2-V4. These receivers are designed to pair with WSCOME modules. They are not universal replacement receivers for ordinary 2.4GHz keyboards from other brands.
Can WBT-V3 help if my old wireless keyboard receiver is lost?
WBT-V3 does not pair with the lost original receiver system of another brand’s wireless keyboard. But if that keyboard can still work through a USB cable, WBT-V3 can treat it as a wired keyboard and convert that wired USB input to Bluetooth or WSCOME 2.4G receiver mode.
Which product should I choose?
Choose WBT-V3 if you want to convert one wired keyboard to wireless. Choose WBT2-V4 if you want one keyboard and mouse to switch between multiple computers.