Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
For more information about the recommended memory configurations, please check the Hardware Installation Guide of your Synology product.
Storage
Drive Bays
4
Maximum Drive Bays with Expansion Unit
9 (DX517 x 1)
M.2 Drive Slots
2 (NVMe)
Drive Type (See all supported drives)
3.5" SATA HDD
2.5" SATA SSD
M.2 2280 NVMe SSD
Hot Swappable Drive*
Notes
The hot swappable drive feature is not supported by M.2 SSD slots.
External Ports
RJ-45 1GbE LAN Port
2
USB 3.2 Gen 1 Port*
2
Expansion Port
1
Expansion Port Type
eSATA
Notes
This device's 1GbE LAN ports have a maximum transmission unit (MTU) size of 1,500 bytes.
The USB 3.0 standard was renamed to USB 3.2 Gen 1 by the USB Implementers Forum (USB-IF) in 2019.