First, the USB cable used to connect the U316 must be a Type-C data cable or a Type-C OTG cable; a charging cable cannot be usedSecond, the U316 does not require additional software installation to connect to a mobile phone or computer. Connecting to a computer requires for Windows 10 or later. Playing DSD files on a computer requires the ASIO driver, which can be obtained from customer service. Playing DSD files on a mobile phone requires Hiby PlayerThird, the AUX output port is for convenient use with a 3.5AUX cable, but it is not suitable for directly driving headphonesThe coupling capacitors are ELNA's high-end BP non-polar capacitors, full of character. The filters are also high-end ELNA capacitors, ensuring low ripple and a clean sound. The LPF circuit uses through-hole JRC5532 op-amps, facilitating future upgrades to higher-end op-amps.Model:U316Input:USBOutputs:include one RCA cable and a 3.5mm headphone jack.Working voltage:USB 5Vdigital interface:XMOS316Decoding chip:ES9039Q2MDecoding parameters:DSD64-512,PCM 32-bit 768K (WIN10 built-in driver supports 384K)total harmonic distortion: Less than 0.002%signal-to-noise ratio:120DBFrequency response range:20-20K@1KHZ+0.3DB(The product printed words may vary depending on the batch, but this does not affect use)Color: As ShownMaterial: plasticPackage Contents:1 * DAC Headphone AmplifierOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.