WD My Cloud Expert Series EX4100 Personal Cloud Storage

Processor: MarvellARMADA388 1.6 GHz dual-core
Memory: 2GB DDR3
Interface: Gigabit Ethernet x 2
Power supply (DC in) x 2
USB 3.0 expansion port x 2 rear
USB 3.0 port with direct copy x 1 front
Drive bays: 4 x 3.5 inch hard drive bays, hot swap capable, tray-less design
Internal hard drives: WD Red NAS hard drives
System Requirements: Windows 8, Windows 7, Windows Vista, Windows XP (SP3) operating system
Mac OS X Mountain Lion, Lion, Snow Leopard and Mavericks operating systems
DLNA/UPnP devices for streaming
Internet connection for remote access