Model: DS423
CPU: Realtek RTD1619B
Memory: 2GB DDR4
Compatible Drive types: 4 x 3.5" or 2.5" SATA HDD/SSD (drives not included)
External ports: 2 x USB 3.2 Gen 1 ports
Lan ports: 2 x 1GbE RJ-45

Model: DS723+
CPU: AMD Ryzen R1600
Memory: 2GB DDR4 (Expandable Up to 32GB (16GB x 2)
Compatible Drive types: 2 x 3.5" or 2.5" SATA HDD/SSD (drives not included)
Maximum Support: Up to 36TB (2 × 18TB drives)
External ports: 1 x USB 3.2 Gen 1 ports
Lan ports: 2 x 1GbE RJ-45

Model: TS-464-8G
CPU: Intel® Celeron® N5095 4-core/4-thread processor, burst up to 2.9 GHz
Memory: 8GB DDR4 (expandable upto 16GB) 2 x SODIMM RAM Slot
Compatible Drive types: 4x 3.5-inch SATA 6Gb/s, 3Gb/s
External ports: 2 x USB 2.0 | 2 x USB 3.2
M2 Slot: 2 x M.2 2280 PCIe Gen 3 x1
Lan Ports: 2 x 2.5G Rj45

Model: DS923+
CPU: AMD Ryzen R1600
Memory: 4GB DDR4 (Expandable Up to 32GB (16 x 2)
Compatible Drive types: 4 x 3.5" or 2.5" SATA HDD/SSD (drives not included)
Maximum Support: Up to 80 TB (4 × 20 TB drives)
External ports: 2 x USB 3.2 Gen 1 ports
Lan ports: 2 x 1GbE RJ-45

Model: TS-832PX-4G
CPU: AnnapurnaLabs Alpine AL324 ARM® Cortex-A57 4-core 1.7GHz processor
Memory: 16GB DDR4 (non-expandable)
Compatible Drive types: 8 x 3.5-inch SATA 6Gb/s, 3Gb/s
External ports: 3 x USB 3.2
M2 Slot: Optional via PCIe Adapter.
Lan Ports: 2 x 2.5G Rj45 | 2 x 10GbE SFP+