QNAP TS-251D-4G 2-Bay Diskless NAS Celeron J4005 Dual-Core 2.0GHz CPU 4GB RAM, Intel Celeron J4005 Dual-core 2.0GHz Processor (Burst up to 2.7GHz), Intel HD Graphics 600, 4GB SO-DIMM DDR4 (Max. 8GB), 4GB, 2x 3.5" SATA 6Gb/s, 3Gb/s, 3.5" SATA HDD, 2.5" SATA SSD/HDD, PCIe Gen 2 x4 Slot, 3x USB 2.0, 2x USB 3.2 Gen 1, HDMI 2.0, Gigabit RJ-45, 1x 70mm, Hot-Swappable. The TS-251D integrates secure data storage and multimedia entertainment into one device. Featuring a PCIe slot, the TS-251D allows you to flexibly extend NAS functionality and potential applications. You can enhance overa