Usb sound card external usb sound blaster sound card with sbx pro studio for notebooks and pcs features sound blaster x fi surround 51 pro turns your pc or notebook into a 51 entertainment system featuring sbx pro studio technology easy to install it replaces low quality on board audio with high quality connectivity options and remote control a convenient volume control knob headphone and microphone inputs for a headset are also close at hand sbx pro studio definition entertainmen