Realtek RTL9210B-CG is a dual-protocol USB bridge that acts as a "host" for both PCIe/NVMe and SATA drives, allowing for automatic switching between the two. Key Technical Specifications Host Interface : USB 3.1 Gen 2 (up to 10Gbps). Device Interfaces : PCIe Gen3 x2 (up to 16Gbps bandwidth). : SATA Gen3 (up to 6Gbps). Auto-Switching
Key changes in the 2021 circuit:
Operating voltage: 3.3V to 5V
Operating current: 10mA to 20mA
Suspend current: 100μA to 200μA
SATA: Supports SATA Gen3 (6Gbps) and is backward compatible with Gen2/Gen1.rtl9210b datasheet 2021