Supports AES/EBU, IEC 60958, and S/PDIF digital audio standards. Supports true 5.1 and 7.1 channel audio output. Compatible with 5.1 speaker systems. Sampling rates up to 48 kHz (supports 32 kHz, 44.1 kHz, and 48 kHz digital recording). Fiber optic output supports 48 kHz sampling rate only; DTS-CD (44.1 kHz) requires sample rate conversion for playback. Compatible with Windows 98, ME, 2000, XP, Vista, Windows 7, Windows 8, and Mac OS 9.1 (stereo output only on Mac). Full-duplex audio playback and recording without requiring an internal PC sound card. USB 2.0 interface, backward compatible with USB 1.1. Compliant with Audio Device Class Specification v1.0. Supports USB full-speed data transfer up to 12 Mbps. Features three input terminals (including one optical input) and three output terminals (including one optical output). Typical setup includes a PC, this sound card, an amplifier, and a 5.1 speaker system. Ideal for HTPC and home theater applications where high-fidelity audio is required—such as movie playback, gaming, or karaoke. Can be used with standard headphones for voice chat and online karaoke. Enables AC-3 and DTS surround sound playback in digital home theater systems or when connected directly to a 5.1 active speaker system. Package includes 1 x Sound Card. Note: Color may vary slightly due to monitor settings and lighting conditions. Slight dimensional variations may occur due to manual measurement.