1.System interface:32-bit PCI bus master,PCI12.1,and PCI12.2 compliance 2.Provides audio fidelity that rivals movie theaters with 4-channel digital sound 3.Customize Internet audio with the power and surround sound of EAX audio technology 4.Enjoy compelling 3D audio and 4-channel sound on multiple speaker series 5.Rich software bundled 6.HRTF-base 3D positional audio,supporting directSound 3D,EAX and A3D interfaces 7.Supports multi-speaker output to 2/2.1/4/4.1 speakers 8.Supports EAX,karaoke key,and Echo sound effects 9.High performance dual-game port on the sound card 10.MPU401 compatible MIDI interface and GM 11.Complies with microsoft PC99 specification 12.Wave table synthesizer:DLS-base Wavetable music synthesizer 13.Software compatibility:fully Sound Blaster,Sound Blaster Pro and DirectSound compatible. 14.External connector:front-out,rear-out,center and LFE,line-in,MIC-in and game /MIDI ports. 15.Internal connector:CD audio,AUX connectors. 16.3D effect: Microsoft DirectSound 3D;Aureal A3D;HRTF 3D extension positional SPECIFICATION: Type PCI 4ch sound card output 4 channel sound port Chipset CMI8738 Color Balck Operating Temperature 10C~40C Storage Temperature -10C~80C Package Content: 1x PCI Audio Sound Card 1x CD Driver