Supports AES/EBU, IEC60958, S/PDIF Supports 5.1 and 7.1 channels; compatible with 5.1 speaker systems Up to 48kHz sampling rate; supports 32kHz, 44.1kHz, and 48kHz digital recording Optical output supports up to 48kHz sampling rate; DTS-CD at 44.1kHz requires sample rate conversion Compatible with Windows 98/ME/2000/XP/Vista/Win7/Win8 and Mac OS 9.1 (stereo output only on Mac) Enables full-duplex audio playback and recording without requiring a built-in PC sound card USB 2.0 interface, backward compatible with USB 1.1 Complies with USB Audio Device Class Specification v1.0 Supports USB full-speed data transfer up to 12 Mbps Features 3 input terminals, including one optical input Includes 3 output terminals and 1 optical S/PDIF output Output configuration: 5.1 channels plus fiber optic SPDIF System setup: PC + sound card + amplifier + 5.1 speakers Ideal for HTPC home theater systems and users with high audio quality demands, such as movie viewing, gaming, and karaoke Can be used with standard headphones for voice chat and online singing applications Delivers authentic AC-3 or DTS surround sound experience in digital home theaters or when connected directly to active 5.1 speakers Package includes: 1 x Sound Card