Synology M2D18 PCIe adapter card. It features two M.2 NBMe SSD slots.

The Synology M2D18 is designed for plus series and xs/xs+ series rackmount and tower NAS that have a PCIe slot.

✅ Compatible DiskStation Models

Here are the confirmed compatible models (both NVMe and SATA M.2 SSDs):

· 22 series: RS822RP+, RS822+
· 21 series: RS1221RP+, RS1221+
· 20 series: RS820RP+, RS820+
· 19 series: DS2419+II, DS2419+, DS1819+, RS1219+
· 18 series: DS3018xs, DS1618+, RS3618xs, RS2818RP+, RS2418RP+, RS2418+, RS818RP+, RS818+
· 17 series: DS3617xsII, DS3617xs, DS1817+, DS1517+, RS18017xs+, RS4017xs+, RS3617xs+, RS3617RPxs
· FS series: FS1018, FS2017


100% work. you will need to get SSD screw and mounts...
card only. no box