The UGREEN CM129 50599 USB External Stereo Sound Card is a compact USB audio adapter that adds convenient 3.5mm headphone, microphone and headset connectivity to compatible computers and other supported devices. It is particularly useful when a laptop or desktop has a damaged audio port, lacks separate microphone/headphone connections, or when you want to use an external USB sound interface.

The CM129 uses a USB 2.0 Type-A connection and features separate 3.5mm headphone and microphone ports plus a 4-pin CTIA combo headset port. It uses the SSS1629 audio chipset, supports 16-bit/48 kHz audio, and offers controls for volume and microphone/headphone muting.

For TechShek.pk customers, the UGREEN CM129 50599 is a practical solution for PC audio, online meetings, gaming headsets, voice calls, recording and everyday multimedia use.

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Detailed Description

The UGREEN CM129 USB Stereo Sound Card 50599 converts an available USB 2.0 port into a convenient external audio interface with 3.5mm connections.

Instead of relying on your computer's built-in sound hardware, you can connect the CM129 through USB and then connect compatible headphones, earphones, microphones or headsets through its audio ports.

This makes it especially useful for desktop PCs where the front or rear audio connectors are inconvenient or damaged, laptops with faulty headphone ports, and systems where you need separate headphone and microphone connections.

UGREEN's product documentation identifies the CM129 as a USB-A external stereo sound card with a headphone output, dedicated microphone input and 4-pole CTIA headset connection.

The 50599 version is commonly listed with a 1-metre cable, while another CM129 variant, 40964, is sold with a shorter 15 cm cable. This distinction is important when creating your TechShek.pk listing.

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USB to 3.5mm Audio Conversion

The CM129 provides an easy way to add 3.5mm audio connectivity through USB.

Basic Connection

Computer USB Port → UGREEN CM129 → Headphones / Headset / Microphone

This can be useful when:

• Your computer's 3.5mm audio port is damaged
• Your desktop has inconvenient audio ports
• You need separate headphone and microphone connections
• You want an external sound card
• You need a simple USB audio solution

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Three 3.5mm Audio Connections

One of the key advantages of the CM129 is its flexible port configuration.

It provides:

1. Dedicated Headphone Port

The green 3.5mm jack is designed for stereo headphone/earphone output.

2. Dedicated Microphone Port

The red/pink 3.5mm jack is designed for microphone input.

3. 4-Pin Combo Headset Port

The additional 3.5mm combo port supports compatible CTIA 4-pole TRRS headsets, allowing headphone audio and microphone functionality through a single headset connector.

This makes the CM129 useful for both traditional PC headsets and single-plug headsets.

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SSS1629 Audio Chipset

The UGREEN CM129 uses the SSS1629 audio chipset.

The chipset is designed to provide external USB audio processing and includes noise-reduction functionality according to product listings.

The adapter supports up to 16-bit/48 kHz sampling, providing stereo audio suitable for everyday music, movies, gaming, calls and general computer use.

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Volume Control

The CM129 includes an integrated physical volume control, allowing you to adjust audio output directly from the adapter instead of relying entirely on Windows or macOS controls.

This is particularly convenient when:

• Listening to music
• Watching videos
• Gaming
• Joining meetings
• Using headphones at your desk

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Independent Mute Controls

The CM129 also provides dedicated controls for quickly muting audio and microphone functions.

This can be convenient during:

• Zoom meetings
• Microsoft Teams calls
• Online classes
• Gaming sessions
• Voice chats
• Streaming
• Recording

You can mute when you need privacy without having to navigate through software settings.

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Plug and Play

The CM129 is designed for driver-free operation on supported operating systems.

UGREEN documentation and current product references list compatibility with Windows, macOS and Linux, with no additional driver installation required for normal operation.

Simply connect the USB cable and select the UGREEN USB audio device as the playback or recording device if the operating system does not automatically switch to it.

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Useful for Gaming

The CM129 can be particularly useful for gaming PCs.

It allows you to connect:

• Gaming headsets
• Headphones
• External microphones
• PC speakers

The separate headphone and microphone ports are useful for gaming headsets that use two individual 3.5mm plugs.

The integrated mute controls can also be useful when communicating with teammates.

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Great for Online Meetings

For remote work and online meetings, the CM129 provides both audio output and microphone input through USB.

It can be used with compatible applications such as:

• Zoom
• Microsoft Teams
• Google Meet
• Discord
• Skype
• Other communication software

The actual application compatibility depends on the host operating system and software.

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Smartphone and OTG Support

The CM129 can also be used with compatible smartphones and other OTG-enabled devices.

However, the source device must support USB OTG/audio functionality, and an appropriate USB connection or OTG adapter may be required. Current product references specifically note OTG support for compatible phones.

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Support for Two Headsets

One notable feature listed for the CM129 is support for using two headsets simultaneously, making it possible to share audio in suitable configurations.

This can be useful when:

• Watching content with another person
• Sharing computer audio
• Working with a second headset
• Monitoring audio

The exact behavior depends on the connected headset configuration and operating system.

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Compact External Sound Card

The CM129 is considerably more convenient than installing an internal sound card.

It simply connects externally through USB and can be moved between compatible computers.

This makes it useful for:

• Desktop PCs
• Laptops
• Workstations
• Gaming setups
• Home offices
• Travel setups

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Key Features

• UGREEN CM129
• Model/SKU: 50599
• USB 2.0 external stereo sound card
• USB-A connection
• Converts USB to 3.5mm audio
• Dedicated 3.5mm headphone output
• Dedicated 3.5mm microphone input
• 4-pin CTIA headset/microphone combo port
• SSS1629 audio chipset
• 16-bit / 48 kHz sampling
• SNR ≥85 dB
• Frequency response: 20 Hz–20 kHz
• Integrated volume control
• Headphone mute function
• Microphone mute function
• LED operation indicator
• Plug and play
• Driver-free on supported systems
• Hot-swappable
• OTG support on compatible devices
• Supports compatible Windows, macOS and Linux systems
• Suitable for gaming, calls, meetings and multimedia
• 1-metre cable for the 50599 variant

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Specifications Chart

Specifications are compiled from UGREEN documentation and multiple current listings; cable length is specifically associated with the 50599 version.

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UGREEN CM129 vs Built-In Computer Audio

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UGREEN CM129 vs Simple USB Audio Adapter

*OTG requires a compatible host device.

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Who Should Buy UGREEN CM129 50599?

Desktop PC Users

Ideal for desktop users who need a convenient external sound card or whose motherboard audio ports are damaged or inconvenient to access.

Laptop Users

Useful when a laptop's 3.5mm audio port isn't working properly or when separate microphone/headphone connections are needed.

Gamers

The separate headphone and microphone connections make it suitable for many traditional PC gaming headsets.

Remote Workers

Useful for connecting headphones and microphones during online meetings and calls.

Students

A convenient solution for online classes, lectures and voice communication.

Content Creators

The microphone input can be useful for compatible microphones during voice recording and communication.

Users With Damaged Audio Ports

One of the strongest use cases is replacing or bypassing a faulty 3.5mm audio connection through USB.

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Frequently Asked Questions

1. What is UGREEN CM129 50599?

It is an external USB stereo sound card that converts a USB connection into 3.5mm headphone and microphone connectivity.

2. What is the model number?

The model is CM129, while 50599 is the product/SKU code.

3. Is UGREEN CM129 a sound card?

Yes. It is an external USB sound card/audio adapter.

4. Does it support USB 2.0?

Yes. It uses a USB-A 2.0 connection.

5. Does it have a headphone port?

Yes. It has a dedicated 3.5mm headphone output.

6. Does it have a microphone port?

Yes. It has a dedicated 3.5mm microphone input.

7. Does it support a single-plug headset?

Yes. The combo port supports 4-pin CTIA TRRS headsets.

8. Does it support TRRS OMTP?

No. The combo port is designed for the CTIA standard rather than OMTP.

9. What chipset does it use?

The CM129 uses the SSS1629 chipset.

10. What is the sampling rate?

It supports 16-bit / 48 kHz audio.

11. What is the frequency response?

The listed frequency response is 20 Hz–20 kHz.

12. Does it have volume control?

Yes. It has an integrated physical volume control.

13. Can I mute my microphone?

Yes. The adapter includes microphone mute functionality.

14. Can I mute the headphones?

Yes. It provides headphone mute control as well.

15. Does it require drivers?

The CM129 is designed for plug-and-play operation without additional drivers on supported Windows, macOS and Linux systems.

16. Can I use it for gaming?

Yes. It can be used with compatible gaming headsets, headphones and microphones.

17. Can I use it for Zoom meetings?

Yes. It can provide headphone output and microphone input for compatible meeting software.

18. Can I use it with PS4 or PS5?

Current listings identify compatibility with PS4 and PS5, although functionality can depend on the console and connected headset.

19. Can I use it with a smartphone?

It can work with compatible OTG-enabled smartphones, but an appropriate OTG connection may be required.

20. Can I use two headsets?

UGREEN's product information lists support for two headsets simultaneously in suitable configurations.

21. What is the cable length of 50599?

The 50599 version is listed with a 1-metre cable. The CM129 also exists as a shorter 15 cm variant under another product code.

22. Is it compatible with Mac?

Yes. macOS is listed among the supported operating systems.

23. Is it compatible with Linux?

Yes. Linux is listed as supported.

24. Can it replace a damaged 3.5mm port?

Yes. This is one of its practical applications because it provides an alternative audio interface through USB.

25. Is UGREEN CM129 50599 worth buying?

Yes. It is a useful choice if you need a compact USB sound card with separate headphone/microphone ports, CTIA combo headset support, volume control and microphone/headphone mute controls.

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Important Compatibility Note

The 4-pin combo headset port supports CTIA, not OMTP. If you are using a TRRS headset, make sure it follows the CTIA wiring standard.

Also, the 50599 is the 1-metre version in current product references, while CM129 40964 is associated with a shorter cable. This should be reflected correctly in your TechShek.pk inventory.

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Conclusion

The UGREEN CM129 USB Stereo Sound Card 50599 is a practical external audio solution for users who want to add or replace 3.5mm audio connectivity through USB.

Its combination of USB 2.0 connectivity, dedicated headphone and microphone ports, CTIA 4-pin headset support, SSS1629 chipset, 16-bit/48 kHz audio, physical volume control and independent mute controls makes it particularly useful for computers, gaming setups, online meetings and everyday multimedia.

The 1-metre cable on the 50599 version also provides more flexibility than the shorter CM129 variant, making it suitable for desktop setups where the USB port and audio device aren't positioned next to each other.

For customers searching for UGREEN CM129 50599 Price in Pakistan, it is a strong option when you need a simple, portable and feature-rich USB-to-3.5mm audio adapter without installing an internal sound card.