The Rocketfish RF-51SDCD Creative Labs 5.1 24bit PCI Sound Card with Optical Out is a high-quality internal sound card designed for computers. Made by the brand Rocketfish, this sound card offers 5.1 channels for a surround sound experience. With a PCI port compatibility, this product is suitable for a range of computer systems. The inclusion of optical out enhances the audio output capabilities, making it a versatile option for those seeking superior sound quality. Made in China, this sound card ensures reliable performance and great sound quality for a variety of audio applications.