channel QNAP TS-462-2G NAS 4 HDD trays, 2 x M.2 NVMe PCIe Gen 3 x1, 2-core Intel Celeron N4505 2.9 GHz, 2 GB RAM (1 x 2GB) up to 16 GB (2 x 8GB), 1x2.5 Gigabit Ethernet , Slot PCIe Gen 3 x2, 2 USB 3.