Flexible drive bays configuration for ODD, 2.5" and 3.5" HDD ．Supports easy-swap rear fan x 2 for upgrade ．Compatible with standard PS2 or mini-redundant power supply ．Expandable storage option with InWin storage kits ．GPU holder and adjustable card retainer supporting 350mm dual-slot PCIe cards x 4 ．Convertible to tower with chassis stands (optional) ．Lockable front door for data security ．Tool-free cover for easy installation and quick maintenance