Expand the audio of your ASRock X300 with the ASRock DESKMINI Rear 3.5mm AUX Audio Cable. It connects easily to your X300 motherboard and adds a 3.5mm audio jack to the rear of the chassis. This high-quality cable will give you reliable performance and long-lasting usage. This is perfect for anyone looking to add external audio devices such as 2.1 channel speakers, a soundbar or headphones to their ASRock Deskmini X300.