| Capacity | 4 GB |
| Upgrade Type | System specific |
| OEM Manufacturer Equivalent Part Number | Synology D4ES01-4G |
| Memory | Memory |
| Type | DRAM memory module |
| Technology | DDR4 SDRAM |
| Form Factor | SO-DIMM 260-pin |
| Speed | 1333 MHz |
| Data Integrity Check | ECC |
| Features | Unbuffered |
| Compatibility Information | Compatibility Information |
| Designed For | Synology Disk Station DS1621+ |
| Brand: | Synology |
