This product is either discontinued or we cannot get that from suppliers.
QNAP TS-251PLUS-2G, Intel® Celeron® J1900 quad-core 2.0 GHz, Architecture 64-bit x86, Intel® HD Graphics, QTS 4.3, 2 GB SO-DIMM DDR3L (1 x 2GB), 8GB, 2 x SODIMM DDR3L, 512MB, Drives 2 x Bay, Power/Status, LAN USB HDD1-2, 1 x HDMI Output (up to 1080p), USB 2 x USB 2.0;2 x USB 3.0, 2 x Gigabit Ethernet Port (RJ45) USB Auto Copy.
Qnap Ts-251+-2g Nas 2bay (no Disk) Intel Celeron J1900 quad-core 2.0 GHz Processor (burst up to 2.42 GHz) Network Storage (TS-251PLUS-2G) is powered by a 64-bit Intel® Celeron® quad-core 2.0GHz processor and has 2GB/8GB energy-efficient.