MillSO 3.5mm to USB jack audio adapter ideal to connect a TRRS 4-pole CTIA 3.5mm headset, TRRS mic or speaker to PC via USB interface. One combo interface support stereo sound listening + speaking, dual functions. Easily add a 3.5mm TRRS aux port for your devices, or use it as a replacement for a failed USB sound card audio adapter. (Unidirectional audio transmission: this USB port is output, not input. Audio can only transfer from 3.5mm port to USB port). | Compatibility: this audio adapter fit for various platforms and systems, Windows 10/8.1/8/7/Vista/XP, Mac OS X, Linux, Google Chromebook, Windows Surface 3 pro, Raspberry Pi, etc. Convert USB port of PC, Laptop, Desktop, PS4... to a TRRS 4-pin audio jack, for connecting 3.5mm headset or speakers. (NOT compatible for Apple standard headphones, TV, amplifier, car, PS3). | Driver Free, Plug & Play: Easy to set up, no driver required, just plug and play! USB bus-powered, no external power required. Compact body size and 1-feet-more-length design make sure you will not interfere with other devices when using other USB-ports. Easily be carried in a pocket to the office, conference room or at home. | Premium Materials: Built-in smart Chipset for high-speed audio signal decoding and offer a full and delicate tone, highly restored quality sound. Robust Sapphire Blue Metal Housing ensure a wear-resistant, anti-corrosion, solid protection, and charming out looking. This aux to USB adapter tightly combined 20 Strands of three Cores, enameled copper, soft and durable PVC covers. It's high-density shielding protection, ensures high stability sound transmission, and a soft touch. | Reliable Warranty: MillSO offers an unconditional Warranty for our USB External Stereo Sound Adapter to guard against any quality trouble. Just contact us via ❤[email protected]❤ for MilLSO 24-hour customer support team. Our warm support team will solve any problem for you.