This product is either discontinued or we cannot get that from suppliers.
QNAP TS-231P3-4G 2 Bay Diskless NAS, AnnapurnaLabs Alpine AL314 4-core 1.7GHz, 4GB (1x 4GB) DDR3 SO-DIMM RAM (1x SODIMM DDR3 Slot, Max 8GB at 1x 8GB Configuration), Supports 2x 3.5" SATA HDD or SSDs, Hot-swappable, Ports: 1x Gigabit Ethernet, 1x 2.5 Gigabit Ethernet, 3x USB 3.2 Gen 1, 90W Power Adapter.
The TS-231P3 2-Bay NAS Enclosure from QNAP has a 2.5 GbE RJ45 port that provides up to 2.5x the speed of Gigabit Ethernet and enables smooth multimedia playback and everyday usage.