2-bay NAS, equipped with USB 3.0 ports, power adapter included. - Brand: QNAP - Number of bays: 2-bay - USB ports: USB 3.0 x 2 - Power adapter: Included - Status indicator: Status LED available Thank you for viewing. This unit is for use with two HDDs inserted. I am selling it because I am replacing it with a new device. Operation has been confirmed and initialized. The manufacturer's warranty has already expired, so please handle any unexpected issues at your own risk. I have not experienced any particular problems during approximately one year of use.