Qnap TR-004 4 Bay USB Type-C Direct Attached Storage with Hardware RAID The TR-004 USB 3.0 RAID expansion enclosure allows you to expand the capacity of your QNAP NAS and PC. The TR-004 can also be utilized as a DAS (Direct-attached Storage) device, allowing you to directly access its content just by connecting it via USB. The TR-004 features four 3.5-inch SATA drive bays with multiple RAID configuration options and USB 3.0 Type-C connectivity to bring you a highly reliable and secure storage capacity expansion solution. Features: USB 3.0 Type-C port for faster data transfer. Supports up to four SATA drives for reliable read and write performance Disk mode DIP switch to change from Hardware Control and Software Control configurations for setting RAID group. Lockable hard drive trays to prevent accidental drive removal. Eject button for disconnecting the TR-004 from a NAS or computer. Instantly back up files from the TR-004 to the NAS using the One Touch Copy button. Specifications: CPU Micro processor with hardware RAID Drive Bay 4 x 2.5-inch or 3.5-inch SATA 3Gb/s Drive Compatibility 3.5-inch SATA 6Gb/s, 3Gb/s hard disk drives 2.5-inch SATA 6Gb/s, 3Gb/s hard disk drives 2.5-inch SATA 6Gb/s, 3Gb/s solid state drives Hot-swappable Yes USB 3.0 port 1 x Type-C USB 3.0 (USB 3.1 Gen 1) Dimensions (HxWxD) 168.5 × 160.2 × 219 mm Weight (Net) 1.85 kg Max. number of HDDs/SSDs supported 4 Hard Drive Type 4 x 2.5-inch or 3.5-inch SATA 3Gb/s Operating temperature 0 - 40 °C (32°F - 104°F) Relative Humidity 5~95% RH non-condensing, wet bulb: 27˚C (80.6˚F) Power Supply Unit External Power Adapter, 65W, 100-240V Power Consumption: HDD Sleep Mode 4.17 W Power Consumption: Operating Mode, Typical 18.21 W Fan 1 x 120mm, 12VDC Sound Level 18.1 db(A) Kensington Security Slot Yes