Antec GX500 Black Computer Case Spacious interior and cooling system designed for hard-core gamers or serious PC enthusiasts/owners. Includes two pre-installed 120mm fans from Antec, cables, screws, and tooless 2.5-inch hard drive bays. Design includes latest USB 3.0 I/O top case panel, support for a custom-build water cooling system, With a bevy of in-demand features all at a supremely attractive price, the GX500 is more than just a low price - it's the value case that gives you more for your money.