| Manufacturer | QNAP Systems Inc. |
| Form Factor | Tower |
| Model | TS-431K |
| Capacity | Drive Bay : 4x 3.5-inch SATA 6Gb/s, 3Gb/s;Drive Compatibility 2.5-inch SSD and HDD;Hot-swappable, SSD Cache Acceleration Support |
| Interface | Two Gigabit Ethernet Port (RJ45);Two USB 3.2 Gen 1 port |
| Features | 32-bit ARM Alpine AL214, 4-core, 1.7GHz ; System Memory : 1GB DDR3; Flash Memory 512 MB (Dual boot OS protection) |
| Dimensions | 165 × 160.2 × 220.5 mm |
| Warranty | 24 Months |