The TS-253E features 2.5GbE connectivity, 8GB RAM, and M.2 slots for NVMe SSD caching to deliver high performance for applications such as surveillance systems, virtual machines, file servers or backup servers. Dual HDMI outputs also provide direct multimedia playback and robust surveillance monitoring. Dual 2.5GbE ports 2.5 times faster network speed with existing CAT5e cables; supports port trunking to deliver up to 5Gbps. Dual M.2 2280 PCIe slots Attain greater NAS performance by installing M.2 2280 NVMe PCIe SSDs (sold separately) or Edge TPU. 8GB RAM onboard System performance and multitasking is optimized with 8GB RAM. Long-term model The TS-253E will be available and supported by QNAP for an extended period, up to 2029. Dual HDMI output The dual-screen extension can be used for surveillance or 4K high-resolution video playback. Expand storage capacity Supports USB expansion enclosures (see the compatibility list).