About this item MillSO headsets splitter is 4-Pole TRRS 3.5mm audio headset port to two TRRS female 3.5mm stereo port both with Mic and Audio Function. You can use it to connect two TRRS headsets or mics to one laptop, smartphone, Xbox... (When using the mic function, the plugs of microphone and headphone must both be 4-pole TRRS, and DON'T compatible for IOS standard headphones). [MillSO USB Sound Card Adapter] - USB to dual 3.5mm female ports, both are TRRS 3.5mm standard. Allows two sets of headphones or speakers to one computer USB port. Great for sharing music, movies with your family, or learn together with your friend, work together with your partner... It's a perfect replacement to bypasses the computer 3.5mm audio port, supports clearer and richer stereo sound. (NOTICE: NOT for TS, TRS mic. NOT for TV, amplifier, CD player, PS3, Xbox, car, or truck) Allow you to connect the headphone and the external 4 pole TRRS microphone (not 3 pole TRS microphone) to Laptop, Tablet, PC computer or Smartphone with a 4 pole 3.5mm combo jack. [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 ensures 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. Its 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 for MillSO 24-hour warm customer support team. We will solve any problem for you! › See more product details