Synology DS923+ DiskStation 4-Bay NAS Server Storage Cloud DS 923+.

CPU Model: AMD Ryzen R1600
CPU Quantity: 1
CPU Architecture: 64-bit
CPU Frequency: 2-core 2.6 (base) / 3.1 (turbo) GHz
Memory
System Memory: 4GB DDR4 ECC
Memory Module Pre-installed: 4GB (4 GB x 1)
Total Memory Slots: 2
Maximum Memory Capacity: 32GB (16 GB x 2)
Storage
Drive Bays: 4
Maximum Drive Bays with Expansion Unit: 9 (DX517 x 1)
M.2 Drive Slots: 2 (NVMe)
Compatible Drive Type* (See all supported drives)
3.5" SATA HDD
2.5" SATA SSD
M.2 2280 NVMe SSD
Hot Swappable Drive*: Yes
External Ports
RJ-45 1GbE LAN Port*: 2 (with Link Aggregation / Failover support)
USB 3.2 Gen 1 Port*: 2
eSATA Port: 1
PCIe
PCIe Expansion: 1 x Gen3 x2 network upgrade slot
Size (Height x Width x Depth): 166 mm x 199 mm x 223 mm
System Fan: 92 mm x 92 mm x 2 pcs
Noise Level*: 22.9 dB(A)
Scheduled Power On / Off: Yes
Power Supply Unit / Adapter: 100 W
AC Input Power Voltage: 100V to 240V AC
Power Frequency: 50/60 Hz, Single Phase
Power Consumption: 35.51 W (Access), 11.52 W (HDD Hibernation)
Warranty: 3-year hardware warranty, extendable to 5 years with Extended Warranty Plus