1、With 2 hard disks, the JBOD/RAID0/RAID1 mode can be easily and freely switched through the mode switch. 2、Use independent power supply input to avoid insufficient power supply for dual‑disk and large‑capacity use. 3、The hard drive case is made of aluminum alloy material with good thermal conductivity. 4、57 bee holes are specially designed for heat dissipation, providing a better heat dissipation environment for hard disk work. 5、During the automatic hibernation, the device chip and hard disk can get a good rest and the device quickly dissipates heat to reduce energy consumption and extend the service life. 1 x Hard Disk Enclosure2 x Screwdriver1 x Sticker1 x User Manual1 x Screw Set1 x USB Power Supply Line1 x USB3.0 Data Cable Item Type: Hard Disk BoxModel: K25272Function: Hard disk read and writeSupport Hard Disk: 2 x 2.5in SATA serial hard disks (including SSD) with a thickness of 9.5mm and belowHard Disk Interface: SATA Ⅰ II ⅢComputer Interface: USB 3.0Body Color: BlackWeight: Approx. 80 g / 2.8 ozBody Material: Aluminum alloySize: Approx. 130 x 83 x 25mm / 5.1 x 3.3 x 1inOperating System: For WINDOWXP/Vista/7/8/10/OS X/linuxArray Mode: JBOD/RAID0/RAID1