Built with 2.5GbE connectivity, a quad-core processor, AES-NI hardware encryption engine, 4K HDMI output, and real-time transcoding, the TS-653D 6-Bay NAS Enclosure from QNAP not only provides users with a solution to upgrade to 2.5GbE environments for productive daily backup and restore tasks, but also offers gamers resources for the vast gaming collections. The TS-635D also supports PCIe expansion with a PCIe 2.0 x2 slot, which can be fitted with a 10 Gb/s USB 3.2 Gen 2 port, an M.2 SSD for SSD cache acceleration, a 5GbE port, or a 10GbE port. Built with six drive bays that are capable of natively supporting 3.5" SATA III and SATA II hard drives, as well as 2.5" SATA hard drives and SSDs, this NAS will allow you to store and share many files, as it allows 800 maximum concurrent connections. The TS-653D runs on the QTS 4.4.2 operating system. Its CPU is a 2.0 GHz Intel Celeron J4125 Quad-Core and its 4GB of DDR4 RAM allows frequently used files and applications to be quickly accessed. When connected using one 2.5GbE port, this NAS can deliver download speeds of up to 187 MB/s and upload speeds of 291 MB/s. With both 2.5GbE ports in use, download speeds increase to 376 MB/s and upload speeds are boosted to 498 MB/s. When using an optional 10GbE card, download speeds max out at 683 MB/s, while upload speeds reach 399 MB/s. Also feat model : ADATA XPG SX6000 Lite 512GB PCIe 3D NAND PCIe Internal Solid State Drive tag : NAS