This product is either discontinued or we cannot get that from suppliers.
QNAP TS-463XU-4G 4 Bay Rackmount Diskless NAS, AMD GX-420MC quad-core 2.0 GHz processor, 4GB DDR4 (1x 4GB, upgradable to 16 GB), 512MB , 1 x 10GbE 10GBASE-T (pre-installed PCIe card), 4x Gigabit RJ45 LAN ports, 2x USB 3.0 port, 2x USB 2.0 port, 250W, 100-240V AC, 50/60 Hz Power Supply, 1U Rackmount, Rails not included.
The cost-efficient 10GbE-ready TS-463XU is powered by a high-performance AMD G-Series quad-core processor. Featuring native 10GbE connectivity that delivers high performance with persistent throughput, along with storage scalability.