This speaker kit fits conveniently in a 5.25" bay and sounds great. It comes with a 4W built-in stereo music amplifier to help reflect the purity of sound and create powerful sound effects. The user friendly front panel includes volume, bass and power controls along with an LED sound indicator. This kit includes a PCI bracket to connect to your sound card’s or M/B external output jack. The Xpeaker is powered through your systems PSU with one 4-pin connector.