QNAP TS-431XeU-8G-US 4-Bay 1U Short-Depth Rackmount NAS (8GB RAM Version) with Built-in 10GbE Network

ARM Cortex-A15 Quad Core 1.7GHz, 8GB DDR3 RAM (max 8GB), SATA 6Gb/s,1 x 10GbE(SFP+), 2 x 1GbE, Hardware encryption, Container Station, Surveillance Station, max 1 UX-800U-RP/UX-1200U-RP Expansion Unit.

Make sure this fits by entering your model number.
ARM Cortex-A15 Quad Core 1.7GHz, 8GB DDR3 RAM (max 8GB)
SATA 6Gb/s,1 x 10GbE(SFP+), 2 x 1GbE, Hardware encryption, Container Station
Surveillance Station, max 1 UX-800U-RP/UX-1200U-RP Expansion Unit
The short depth design is suitable for installing in smaller racks or space-constrained locations
10GbE readiness, SSD caching, and encryption acceleration engine