https://www.qnap.com/en/product/ts-1673au-rp/specs/hardware TS-1673AU-RP-16G CPU AMD Ryzen™ Embedded V1500B 4-core/8-thread 2.2 GHz processor CPU Architecture 64-bit x86 Floating Point Unit Encryption Engine (AES-NI) Hardware-accelerated Transcoding Optional via a PCIe graphics card System Memory 16 GB UDIMM DDR4 (1 x 16 GB) Maximum Memory 64 GB (2 x 32 GB) Memory Slot 2 x Long-DIMM DDR4 Support ECC memory For dual-DIMM configurations, you must use a pair of identical DDR4 modules. Flash Memory 5GB (Dual boot OS protection) Drive Bay 16 x 3.5-inch SATA 6Gb/s, 3Gb/s The system is shipped without HDD. For the HDD compatibility list, please visit https://www.qnap.com/compatibility/ Drive Compatibility 3.5-inch SATA hard disk drives 2.5-inch SATA hard disk drives 2.5-inch SATA solid state drives Hot-swappable M.2 Slot Optional via a QNAP QM2 PCIe card SSD Cache Acceleration Support 2.5 Gigabit Ethernet Port (2.5G/1G/100M) 2 (also support 10M) 5 Gigabit Ethernet Port (5G/2.5G/1G/100M) Optional via a network adapter 10 Gigabit Ethernet Port Optional via a network adapter Wake on LAN (WOL) Only the 2.5GbE port Jumbo Frame PCIe Slot 2 x PCIe Gen3 x4 USB 3.2 Gen 1 port 1 x Type-A USB 3.2 Gen 2 (10Gbps) Port 2 x Type-C 1 x Type-A HDMI Output Optional via a PCIe graphics card Form Factor 3U Rackmount LED Indicators HDD 1-16, Status, LAN, USB, Power Buttons Power, Reset Dimensions (HxWxD) 132 × 482 × 425 mm Weight (Net) 12 kg Weight (Gross) 17.15 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 550W (x2), 100-240V AC, 50-60Hz, 7-3.5A Power Consumption: HDD Sleep Mode 47.75 W Power Consumption: Operating Mode, Typical 97.34 W Tested fully populated with WD10EFRX hard drives. Fan 3 x 80mm, 12VDC System Warning Buzzer Max. Number of Concurrent Connections (CIFS) - with Max. Memory 2000