This product is either discontinued or we cannot get that from suppliers.
QNAP TS-463XU-RP-4G 4-Bay TurboNAS, AMD Quad-Core CPU 4GB RAM, G-Series GX-420MC quad-core 2.0Ghz, Installed Memory: 4GB (1x4GB) DDR3, Expandable up to 16GB (2x8GB), Memory Slots: 2x SO-DIMM DDR3L, 4x 3.5" SATA 6 Gbps bays, 1x RJ45 10GBASE-T, 4x RJ45, 1x PCIe 2.0 X4, 2x USB 3.0, 3x USB 2.0 (Front: 1, Rear: 2).
The QNAP TS-463XU-RP-4G 4-Bay TurboNAS (TS-463XU-RP-4G) is a virtualisation-ready network-attached storage device designed to leverage high-speed 10GbE connectivity while providing easy volume scalability and high-availability for stored data.