Supports AES/EBU, IEC60958, S/PDIF Truly supports 5.1 and 7.1 channels; can connect to 5.1 speakers 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 o playback and recording without requiring a built-in PC sound card USB 2.0 interface, backward compatible with USB 1.1 Complies with USB o Device Class Specification v1.0 Supports USB full-speed data transfer up to 12 Mbps 3 input terminals, including one optical input 3 output terminals, including one optical S/PDIF output Output: 5.1 channels plus optical S/PDIF Ideal for HTPC home theater systems and users with high o quality demands, such as movie viewing, gaming, and karaoke Can be used with standard headphones for voice chat and online singing Enjoy authentic AC-3 or DTS surround sound in digital home theaters or connect directly to active 5.1 speakers Package includes: 1 x Sound Card