The Cisco UCS 5108 Blade Server Chassis is six Rack Units (6RU) high and can mount in an industry-standard 19-inch rack. A chassis can house up to eight half-width Cisco UCS B-Series Blade Servers and can accommodate both half-width and full-width blade form factors. 4 hot-swappable power supplies are accessible from the front of the chassis, and single-phase 2500 W AC, 2500 W –48 VDC, and 2500 W 200 – 380 VDC power supplies and chassis are available. These power supplies are up to 94 percent efficient and meet the requirements for the 80 Plus Platinum rating. The power subsystem can be configured to support non-redundant, N+1 redundant, and grid-redundant configurations. The rear of the chassis contains eight hot-swappable fans, four power connectors.