Recommend installed in TS-h987XU-RP, TDS-h2489FU, TS-h1090FU speed up Check NAS compatibility list Petabyte-scale capacity with economy: Expand up to petabyte-scale capacity for QuTS hero NAS, by connecting multiple PCIe JBOD expansion enclosures Up to 64 Gb/s: The QXP-3X8PES PCIe Gen 3 x8 expansion card provides up to 64 Gb/s data transfer speed SFF-8644 special cables supported: Install a QXP-3X8PES for connecting the enclosures using SFF-8644 8X special cables