In Win BP691 8.2L Small Form Factor - Small - Black - 3 x Bay - 1 x 200 W - Power Supply Installed - Mini ITX Motherboard Supported - 1 x External 5.25in Bay - 2 x Internal 3.5in Bay - 1x Slot(s) - 2 x USB(s) - 1 x Audio In - 1 x Audio Out

Total 3 expansion bays are sufficient to add ample amount of computing hardware for a dignified configuration Handy configuration small offers quick upgrades and saves time and maintenance cost Mini ITX motherboard builds a perfect symmetry of hardware components required in media server or NAS box