QNAP TVS-673-16G-US 6-bay NAS/iSCSI IP-SAN, AMD R Series Quad-core 2.1 GHz, 16GB RAM, 10G-ready Form Factor: 6-Bay Port RJ-45: 4 x 10/100/1000M Port USB: 2 x USB 3.1 port, and 4 x USB 3.0 Type-A port HDD Interface: 6 x 3.5 / 2.5 SATA 6Gb/s HDDs / SSDs Processor: AMD R-Series RX-421BD quad-core 2.1 GHz processor, burst up to 3.4 GHz Default/ Max. Memory: 16GB DDR4 (2 x 8GB) LEDs: Status / Power, USB, LAN, Drive 1-8, M.2 SSD 1-2 Port Others: 2 x PCIe Gen 3 (x4), one slot is pre-installed with a dual-port USB 3.1 Type-A card