DS218+   2bays

● Dual-core CPU burst up to 2.5 GHz

● Upgradable memory capacity

● Btrfs file system support

DS918+   4bays

● Dual-core CPU burst up to 2.3 GHz

● M.2 NVMe SSD cache support

● 4K Ultra HD video transcoding

DS920+   4bays

● Dual-core CPU burst up to 2.7 GHz

● M.2 NVMe SSD cache support

● Scales up to 9 drives