Key Features . Two built-in M.2 2280 NVMe SSD slots permit cache acceleration without occupying storage drive bays.Intel dual-core processor with AES-NI hardware encryption engine; over 226 MB/s sequential read and 225 MB/s sequential write throughput.2 GB DDR4 memory (expandable up to 6 GB)Average 15% performance boost to photo indexing and other computing-intensive operations as well as database response timeHigh Performance NAS with SSD Cache Acceleration Capability Synology DS420+ is designed for IT enthusiasts and home users. Equipped with a 2-core processor and built-in M.2 NVMe 2280 SSD slots for cache acceleration DS420+ is ideal for data sharing video streaming and photo indexing. Boost Performance with Built-In SSD Slots DS420+ provides two built-in M.2 SSD slots so that you can take full advantage of Synology SSD Cache functionality. Add SSD cache for up to 20 times faster I/O response without using front drive bays. Accelerate Demanding Applications A more powerful CPU speeds up computing-intensive applications. The new 2-core processor boosts photo indexing database response times and web PHP response efficiency. Easily categorise your photo memories smoothly manage files across computers and mobile devices and enjoy blazing fast web applications. Access and Sync Your Files Seamlessly Synology Drive provides a built-in universal portal to access your data anytime and anywhere and synchronize all your files across platforms including Windows macOS Linux Android and iOS..