1、Connect the optical fiber signal source (such as blue light player, computer, etc.) to the input end of the matrix through the optical fiber cable. 2、Connect the signal output end of the matrix to the optical fiber input device through an optical fiber cable. 3、Four optical fiber output signal sources can be connected to two optical fiber input devices at the same time. 4、It can easily switch or distribute four optical fiber signals on two optical fiber input devices. 5、The supported audio format is DTS‑HD/Dolby‑trueHD/LPCM0/DTS/Dolby‑AC3/DSD. 1 x Remote Control1 x Fiber Optic Audio Cable1 x Power Adapter1 x Instruction Manual1 x Digital Optical Matrix  Item Type: Digital Optical Matrix Material: Iron ShellColor: As shown in the pictureSupport Audio Format: DTS-HD/Dolby-trueHD/LPCM 2.0/DTS/Dolby-AC3/DSDPeak Wavelength: 650nmMaximum Transmission Rate: 16MbpsOutput Cable Length: ≤40m / 131.2ft, the use line loss is less than 0.2dB/mMaximum Working Current: 100mAPower Adapter Specifications: AC input (50HZ, 60HZ) 100V-240V; DC output 5V/500mARemote Control Battery: 1 x CR2025(Included)How to Use: Plug and play