CPU Marvell OCTEON TX2™ CN9130 / CN9131 ARMv8 Cortex-A72 4-core 2.2GHz processor CPU Architecture 64-bit ARM Floating Point Unit Encryption Engine System Memory 4 GB SODIMM DDR4 (1 x 4GB) Maximum Memory 32 GB (1 x 32 GB) Memory Slot 1 x SODIMM DDR4 QTS Firmware version 5.0.1(0426) and later will support ECC. Flash Memory 4GB (Dual boot OS protection) Drive Bay 4 x 3.5-inch SATA 6Gb/s, 3Gb/s Drive Compatibility 3.5-inch bays: 3.5-inch SATA hard disk drives 2.5-inch SATA solid state drives Hot-swappable (Not supported M.2 SSD) M.2 Slot 2 x M.2 2280 PCIe Gen 3 x1 slots Compatible with NVMe SSD PCIe Gen 3 and above. Please refer to https://www.qnap.com/compatibility/ for compatibility. SSD Cache Acceleration Support 2.5 Gigabit Ethernet Port (2.5G/1G/100M) 2 (2.5G/1G/100M) 10 Gigabit Ethernet Port 2 x 10GbE SFP+ Wake on LAN (WOL) Jumbo Frame USB 2.0 port 2 USB 3.2 Gen 1 port 2 Form Factor 1U Short Depth Rackmount LED Indicators HDD 1-4, Status, LAN, USB, M.2 SSD 1-2 Buttons Power, Reset Dimensions (HxWxD) 43.3 × 430 × 292.12 mm Excludes ear hook and the protruding part of the Power Supply Unit. Weight (Net) 4.91 kg Weight (Gross) 5.82 kg Operating Temperature 0 - 40 °C (32°F - 104°F) Storage Temperature -20 - 70°C (-4°F - 158°F) Relative Humidity 5-95% RH non-condensing, wet bulb: 27°C (80.6°F) Power Supply Unit 100W PSU, 100-240V Power Consumption: Disk Standby Mode 17.367 Power Consumption: Operating Mode, Typical 30.878 W Fan 3 x 40mm, 12VDC System Warning Buzzer Kensington Security Slot Standard Warranty 3 Max. Number of Concurrent Connections (CIFS) - with Max. Memory 1500