https://www.techpowerup.com/232679/q...53b-series-nas

QNAP Systems, Inc. today launched the TS-x53B series NAS (available in 2-bay, 4-bay and 6-bay models) with a PCIe expansion slot to meet the growing performance and functional demands from SMB and SOHO users. "The TS-x53B is the first NAS in its class to provide PCIe expansion, which provides fantastic long-term potential for the NAS to be upgraded to include features such as SSD caching and 10GbE connectivity," said Jason Hsu, Product Manager of QNAP. "For users who seek high productivity and smart workflows, the TS-x53B series offers a compelling choice in big features," Hsu added.

Powered by the 14 nm Intel Celeron J3455 quad-core 1.5GHz processor (burst up to 2.3GHz), dual-channel 4GB/8GB DDR3L RAM (upgradable to 8GB), SATA 6Gb/s drive support with integrated dual Gigabit LAN ports, the TS-x53B series delivers up to 224 MB/s read and write speeds while also maintaining the same outstanding performance with AES-NI accelerated encryption.