QNAP TR-004U Rack-mounted USB 3.0 RAID expansion cabinet with 4 HDD-slots, black The TR-004U USB 3.0 RAID expansion cabinet allows you to expand the capacity of your QNAP NAS and PC. The TR-004U can also be used as a direct-attached storage (DAS) device to directly access its contents by connecting it via USB. The TR-004U has four 3.5-inch SATA disk compartments with multiple options for configuring RAID and USB 3.0 Type-C connectivity to provide you with a highly reliable and secure storage capacity expansion solution. • USB 3.0 Type-C port for faster data transfer
• Lockable hard disk compartments to prevent accidental removal of the disk
• Supports up to four SATA disks for reliable read and write performance
• Users can configure RAID and monitor disk health with Storage and Snapshot Handlers on a QNAP NAS
• Disk Mode DIP Switcher to change between hardware and software control configurations for RAID group settings
• Can be used to add storage space on a QNAP NAS server as hardware-based RAID storage and users are offered file sharing between platforms Dimensions (WxDxH): 439x291x44mm | 
