External USB 2.0 Sound Card UGREEN 40964 with Volume Control and Mute Function

UGREEN 40964 is an external USB 2.0 sound card that provides a compact, plug-and-play solution for adding or replacing audio input and output on computers, laptops and OTG-capable mobile devices. The device features a hardware volume control, independent mute switches for headset and microphone, and an LED status indicator. It supports dual headset connections, a noise-reduction audio chip and standard 3.5 mm jacks to simplify voice calls, basic recording and multimedia playback when an internal audio device is unavailable or malfunctioning.

Advantages

This external sound card offers immediate audio connectivity without installing drivers, making it suitable for Windows, Mac OS and Linux systems. The integrated SSS1629 noise-reduction chip improves clarity and reduces background noise while the external volume control and mute buttons provide tactile, fast control during calls, gaming or recording. Dual headphone outputs allow two users to listen simultaneously, and the included OTG support enables use with compatible mobile devices.

Suitable for

• Video conferencing and online meetings
• Basic voice recording and podcasting
• Gaming with separate microphone and headphone connections
• Replacing a faulty or absent internal sound card
• Shared audio listening using two headsets

Key specifications

• Interface: USB 2.0 A male input
• Audio outputs: 3.5 mm green earphone jack, 3.5 mm red microphone jack, and 3.5 mm CTIA 4‑pin combo jack
• Sampling rate and depth: 48 kHz, 16-bit
• Signal-to-noise ratio (SNR): ≥ 85 dB
• Frequency response: 20 Hz – 20 kHz
• Physical controls: external volume control and independent mute switches for headset and microphone
• Hot‑swap support: plug-and-play operation without drivers
• Compatibility: Windows, Mac OS, Linux, and OTG-capable mobile devices
• Dimensions: 74 × 34 × 15.5 mm

How to use

Connect the UGREEN 40964 to a computer or OTG-capable device via the USB 2.0 A male connector. Plug headphones and/or a microphone into the corresponding 3.5 mm jacks (green for headphones, red for microphone, or use the CTIA combo jack for headsets with a single plug). The device is recognized automatically by supported operating systems; adjust volume with the external control and use the mute switches to silence microphone or headphones as needed. The LED indicator shows the working status while the sound card is connected.

Usage recommendations

For best audio results, use good-quality 3.5 mm headsets and ensure connections are secure. When recording or making calls, enable the device in the operating system’s audio settings and select the UGREEN sound card as the input/output device. Avoid excessive volume to prevent distortion and verify OTG compatibility on mobile devices before use.