QNAP TS-831XU-RP-4G NAS, 8BAY (NO DISK), 4GB, AL-314 QC, USB,GbE(2),10GbE SFP+(2),2U,2YRProcessor AL 314 Quad Core 1. 7 GHz ARM Cortex A15 CPU Hardware Encryption Accleration System Memory 4GB DDR3 (1 x 4GB) Maximum Memory 16GB Memory Slots 2 x SODIMM DDR3 (Note: For dual DIMM configurations, you must use a pair of identical DDR3 RAM modules.) Flash Memory 512MB Drive Type 8 x 3. 5" 2. 5" SATA 6Gb s HDDs SSDs 10GbE LAN 2 x 10 Gigabit SFP+ LAN ports GbE LAN 2 x Gigabit RJ45 LAN ports USB 4 x USB 3. 0 ports PCIe Slot 1 x PCIe Gen2 (x2) LED