One of Antec's most cost-effective cases, the NSK 4000B II mini tower case brings you environmentally friendly features together with the Quiet Computing technologies. Antec's award-winning solution series always provides sensible, high-quality cases & the NSK 4000B II is no exception. With a stylish front panel now featuring HD audio in & out jacks plus two USB (Universal Serial Bus) 2.0 ports, the NSK 4000B II is quiet, cool & energy-efficient: the perfect solution for your next build.