1. Rhagymadrodd
The Techkey USB Bluetooth 5.4 Adapter is designed to provide your desktop PC or laptop with advanced Bluetooth connectivity. Featuring Bluetooth 5.4+EDR technology and a 5dBi antenna, this adapter offers extended range, faster data transmission, and the ability to connect multiple devices simultaneously. It is compatible with Windows 11, 10, and 8.1 with plug-and-play functionality, and supports Windows 8/7 with driver installation.

Image 1.1: Techkey USB Bluetooth 5.4 Adapter supporting Bluetooth Low Energy (BLE) for various applications.
2. Nodweddion Cynnyrch
- Ystod Estynedig: Utilizes Class 1 radio technology and a 5dBi antenna, providing a transmission range of up to 500ft (150m) in open areas. Actual range may vary due to physical obstructions and wireless interference.
- Fast Transmission Rate: Achieves speeds of up to 3Mbps with EDR technology and Bluetooth Low Energy (BLE) configuration, optimizing data transfer and reducing interference in the 2.4GHz band.
- Plygiwch a Chwarae: For Windows 11, 10, and 8.1, no driver installation is required. Simply plug the adapter into a USB port to begin use.
- Technoleg Bluetooth Uwch: Equipped with the latest Bluetooth 5.4+EDR technology, backward compatible with Bluetooth 5.4/5.3/5.2/4.2/4.0/2.1+EDR. Features Dual Mode (BR/EDR+ Bluetooth Low Energy) for reduced energy consumption and enhanced performance.
- Cysylltedd Aml-Dyfais: Supports simultaneous connections with up to 7 Bluetooth wireless devices, including speakers, keyboards, headsets, mice, and printers.

Image 2.1: Internal chip highlighting key performance benefits of the adapter.
3. Cynnwys Pecyn
- 1 x Techkey USB Bluetooth 5.4 Adapter with 5dBi Antenna
Note: A mini-CD or USB drive containing drivers for older Windows versions (Windows 8/7) may be included. Please check your package contents.
4. Cyfarwyddiadau Gosod
4.1 Gofynion y System
- Operating System: Windows 11 / 10 / 8.1 (Plug & Play)
- Operating System: Windows 8 / 7 (Driver installation required)
- USB Port: Available USB-A port
Note: This adapter is exclusively compatible with Windows operating systems and does not support Mac OS, Linux, car stereo systems, XBOX, PS4, or TVs.
4.2 Camau Gosod
- Mewnosodwch yr addasydd: Carefully plug the Techkey USB Bluetooth 5.4 Adapter into an available USB-A port on your desktop PC or laptop.
- Automatic Recognition (Windows 11/10/8.1): For these operating systems, the adapter should be automatically recognized and installed by the system. No manual driver installation is typically needed.
- Gosod Gyrrwr (Windows 8/7): If you are using Windows 8 or 7, you may need to install drivers. Please refer to the included mini-CD/USB drive or visit the Techkey official website for the appropriate drivers. Follow the on-screen instructions to complete the installation.

Image 4.1: Plug & Play setup for Windows 11/10/8.1.
5. Cyfarwyddiadau Gweithredu
5.1 Paru Dyfeisiau Bluetooth
- Galluogi Bluetooth: After successful installation, ensure Bluetooth is enabled on your computer. You can usually find this in Windows Settings > Devices > Bluetooth & other devices.
- Rhoi'r Dyfais mewn Modd Paru: Place your Bluetooth device (e.g., headphones, mouse, keyboard) into pairing mode. Refer to your device's manual for specific instructions.
- Ychwanegu Dyfais: On your computer, click "Add Bluetooth or other device" and select "Bluetooth."
- Dewis a Chysylltu: Bydd eich cyfrifiadur yn sganio am ddyfeisiau Bluetooth gerllaw. Dewiswch eich dyfais o'r rhestr a dilynwch unrhyw awgrymiadau ar y sgrin i gwblhau'r broses baru.
5.2 Cysylltu Dyfeisiau Lluosog
The Techkey USB Bluetooth 5.4 Adapter supports connecting up to 7 Bluetooth devices simultaneously. Once paired, your devices should automatically reconnect when they are within range and Bluetooth is enabled on your computer.

Image 5.1: The adapter supports a wide range of applications and multiple device connections.
6. cynnal
To ensure the longevity and optimal performance of your Techkey USB Bluetooth 5.4 Adapter, follow these general maintenance guidelines:
- Cadw'n Sych: Osgowch amlygu'r addasydd i leithder neu hylifau.
- Tymheredd: Store and operate the adapter within normal room temperatures. Avoid extreme heat or cold.
- Glanhau: If necessary, gently wipe the adapter with a dry, soft cloth. Do not use harsh chemicals or abrasive cleaners.
- Amddiffyniad Corfforol: Osgowch ollwng yr addasydd neu ei roi dan effeithiau cryf.
7. Datrys Problemau
If you encounter issues with your Techkey USB Bluetooth 5.4 Adapter, consider the following troubleshooting steps:
- Adapter Not Recognized (Windows 11/10/8.1):
- Try plugging the adapter into a different USB-A port.
- Ailgychwyn eich cyfrifiadur.
- Check Device Manager to see if the Bluetooth device is listed and enabled.
- Driver Issues (Windows 8/7):
- Ensure you have installed the correct drivers from the included media or the Techkey official websafle.
- If drivers were installed, try reinstalling them.
- Problemau Cysylltedd:
- Gwnewch yn siŵr bod eich dyfais Bluetooth mewn modd paru ac wedi'i gwefru'n llawn.
- Verify that the device is within the adapter's operational range (up to 500ft/150m in open areas).
- Reduce physical obstructions (walls, furniture) and sources of wireless interference (Wi-Fi routers, microwaves) between the adapter and your Bluetooth device.
- Remove and re-pair the Bluetooth device from your computer's Bluetooth settings.
- Slow Transmission/Lag:
- Ensure there are no other strong 2.4GHz wireless signals causing interference.
- Limit the number of active Bluetooth connections if experiencing performance degradation.
8. manylebau
| Nodwedd | Manyleb |
|---|---|
| Dimensiynau Cynnyrch | 4.29 x 3.74 x 0.67 modfedd |
| Pwysau Eitem | 1.44 owns (0.04 cilogram) |
| Brand | Techkey |
| Rhyngwyneb Caledwedd | USB |
| Lliw | Du |
| Dyfeisiau Cydnaws | Headphone, Keyboard, Laptop, Mouse, Printer, Speaker |
| Cyfradd Trosglwyddo Data | 3 Megabit yr eiliad |
| Teulu Systemau Gweithredu Cydnaws | Ffenestri |
| Minimum Required Operating System Version | Windows 10 (Plug & Play), Windows 8/7 (Driver Required) |

Image 8.1: Performance comparison of the Techkey Bluetooth 5.4 adapter.
9. Gwarant a Chefnogaeth
For warranty information or technical support, please contact Techkey customer service. Refer to the product packaging or the official Techkey websafle am fanylion cyswllt.