Model : WDC WD40EJRX-89T1XY0Interface: SATA 3.1 versionForm Factor:3.5Standing Screen Display Size: 10.5 Inches, RAM: 4000 GB, Hard Drive: 4 TB Mechanical Hard Disk, Wireless Type: 802.11a/b/g/n, Number of USB 2.0 Ports: 1, Brand: Western Digital, Series: Purple, Operating System: Windows/Mac, Item Weight: 1.5 pounds, Product Dimensions: 5.79 x 4 x 1.03 inches, Color: Purple, Flash Memory Size: 4 TB, Hard Drive Rotational Speed: 5400 RPM, Cache Size: 64 MB, Voltage: 120 Volts,