Form Factor : Tower Processor : Intel Celeron N4505 / Dual Core 2.0GHz (Max burst up to 2.9GHz) / Hardware Encryption Engine (Yes) Memory System : 4GB SODIMM DDR4 / 4GB (1 x 4GB) Memory Max : 2 x Slot / 32 GB (2 *16GB) "Drive Hot Swap " Yes Supported RAID Types TRAID, Single, JBOD, RAID 0, RAID 1, RAID5, RAID 6, RAID 10 Storage : 4 x Disk Slot Number / 3.5" -2.5" SATA HDD / 2.5" SATA SSD / 80TB (20TB x 4) (Capacity may vary by RAID types) File System : Btrfs, EXT4 / EXT3, EXT4, NTFS, FAT32, HFS+ External Ports : 2.5 Gigabit Ethernet Port (2) / USB 3.2 Gen 2 (10Gbps) Port (2) / HDMI Output (1) / M.2 2280 NVMe Slot (2) Appearance : 227 x 225x 136 mm / Gross Weight 3,6Kg / Packaging Size 300 x 275 x 186 mm Power : 90W / 100V - 240V AC / 50/60 Hz, Single frequency / 35.2 W (Read/write state) System Fan : 80 mm x 80 mm x25mm 2 pcs Fan Mode : Smart, High /Middle /Low speed Noise Level : 27.4dB(A) ( Idle state)  Working Temperature : 0°C ~ 40°C Limited warranty : 2 years Certificate : FCC, CE, CCC, KC Environment : RoHS, WEEE