This product is either discontinued or we cannot get that from suppliers.
QNAP TS-351-4G 3 Bay Diskless NAS Intel Celeron J1800 2.41GHz 4GB, Intel Celeron J1800 dual-core 2.41 GHz processor, 4GB DDR3 (1x4GB), Intel HD Graphics, 3x 3.5" Hot-Swappable Drive Bays, 2x M.2 SSD Slots, 1x Gigabit, 1x HDMI, 1x USB3.0, 2x USB2.0, 1x 3.5mm audio jack, Built-in Speaker.
30% of QNAP users choose RAID 5 arrays for their NAS to provide higher data protection, better system performance and optimized storage utilization. The 3-bay TS-351 not only allows you to build a RAID 5 array on your NAS with the fewest disks.