| Models | Supports |
|---|---|
| FS6400 | SAS/SATA |
| FS3600 | SATA |
| FS3410 | SATA |
| FS3400 | SATA |
| FS3017 | SAS/SATA |
| FS2017 | SAS/SATA |
| HD6500 | SAS/SATA |
| RS18017xs+ | SAS/SATA |
| RS18016xs+ | SAS/SATA |
| SA6400 | SATA |
| SA3610 | SAS/SATA |
| SA3600 | SAS/SATA |
| SA3410 | SAS/SATA |
| SA3400D | SAS |
| SA3400 | SAS/SATA |
| SA3200D | SAS |
UC models only support SAS drives, and use DSMUC instead of DSM
| UC Models | Supports |
|---|---|
| UC3400 | SAS |
| UC3200 | SAS |
From https://www.synology.com/en-global/products/accessories/NAS?category=expansion_units
| Expansion Units | Supports |
|---|---|
| RX6022sas | SAS |
| RX1222sas | SAS/SATA |
| RXD1219sas | SAS |
| RX1217sas | SAS/SATA |
| RX1215sas | SAS |