Four bays, and they are not four of the same thing. The sixth bullet states four SATA bays taking up to 32 TB each, of which up to two will also accept U.2 NVMe solid-state drives, plus two M.2 slots carrying up to 16 TB between them — 144 TB in total, and the arithmetic holds: 4 × 32 + 16 = 144.
The processor line is matched here only by the TerraMaster F8 SSD Plus. The first bullet gives an AMD Ryzen Embedded R2514 with four cores, eight threads and up to 3.70 GHz. Most enclosures on this shelf name a chip by its part number; the TerraMaster F8 SSD Plus also gives cores, threads and a clock, and the DXP6800 Plus gives cores and threads without a clock. The memory is 8 GB DDR4 expandable to 64 GB, which is the highest ceiling on the shelf — the DS723+ bundle supplies 32 GB and the DS225+ tops out at 6 GB.
The eighth bullet does something unusual and worth reading twice. It states that the unit supports an ECC memory upgrade to detect and correct errors over long operation, and then states that the memory supplied is non-ECC, so error correction requires a compatible module bought separately. Two other listings here name ECC: the DS723+ bundle supplies ECC memory, and the DS225+ names its own as non-ECC. This is the only listing on the shelf that publishes a path from one to the other, and it publishes the catch in the same breath.
The network side is two 10GbE sockets. The seventh bullet gives each at 10 Gbps, about 1.25 GB/s theoretical, and states that with link aggregation on compatible equipment the pair is quoted at 20 Gbps or about 2.5 GB/s. Both figures are offered as theoretical, which is the maker stating its own ceiling as a ceiling. Nothing else on this shelf publishes two sockets at that rate: the DXP6800 Plus pairs one 10GbE with one 2.5GbE, and the F8 SSD Plus has a single 10GbE.
The rest of the connections are counted by kind rather than by number: a USB-A at 10 Gbps, a USB-C at 10 Gbps, a USB 2.0, a 4K HDMI output and an SD card slot, stated in the fourth bullet. The card slot is the only one on this shelf, and the bullet explains what it is for — importing from a camera card straight into a folder without a reader or a computer in between.
The software is named, which only the two DSM listings here also manage. UGOS Pro is given with Docker, virtual machines and SAN Manager, and Plex, Emby, Jellyfin and Home Assistant are named as things it will run; the eighth bullet adds that Plex goes through Docker and needs setting up by hand. A surveillance function is built in, limited in as many words to ONVIF and RTSP cameras, with footage kept locally.
RAID is named in the fifth bullet without a level being numbered. Carrying on through a failed drive is what redundancy does, and it is a different thing from having the data in a second place; no array arrangement here substitutes for a copy on separate hardware. The page publishes no figure in watts, no decibel value, and no measurement of the case: the product record carries 257 by 178 by 178 mm (7.01 in) and 6,610 g (233.2 oz), and the bullets carry neither.