Rtl9210b Datasheet [hot] [ AUTHENTIC × Pack ]
The RTL9210B is a high-performance bridge controller.
PCIe Gen 3 x2 (up to 16Gbps theoretical, limited by the 10Gbps USB interface). Downstream Port (SATA): SATA Revision 3.2 (6Gbps). Package: QFN68 (8x8 mm). rtl9210b datasheet
Being able to reuse an old SATA M.2 or a brand-new NVMe drive in the same enclosure is a massive selling point. Conclusion The RTL9210B is a high-performance bridge controller