The Antec SOLO II is the successor to the SOLO case and is part of the Sonata family, weighing in at 20.2 pounds. The SOLO II focuses on Antec's Quiet Computing design, introducing a new set of cosmetic and functional upgrades in comparison to the original SOLO case. Multiple features inside the Antec SOLO II contribute to reducing component vibration and dampening the noise including the dual-layer SECC/Polycarbonate top and side panels as well as HDD silicone grommets and a new TrueQuiet fan design. While Antec designed the internal chamber of the SOLO II to be extremely functional, the external appearance is just as well thought-out with an anodized aluminum front bezel and a piano black finish for an elegant, sleek look. For connectivity, the SOLO II's front panel houses four USB ports, two of which are USB 3.0 for ultra-fast transfer rates. If silence is the most important part in your system, then the Antec SOLO II case should be perfect for your next PC build.