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The "B" revision introduced critical updates over the original RTL9210: Dual Protocol : While the original RTL9210 often supported only NVMe, the adds native SATA support. Efficiency
Supports SATA Gen3 (6Gbps) and is backward compatible with Gen2 and Gen1. It includes a built-in AHCI driver for seamless communication with SATA drives.
The Realtek RTL9210B Go to product viewer dialog for this item. rtl9210b datasheet 2021
For engineers selecting a bridge controller for a new product, the RTL9210B offers compelling advantages: simplified inventory management (one PCB supports both drive types), extensive power management features, and a proven track record of compatibility with a wide range of SSDs. For end-users, the chip delivers reliable, high-speed external storage at an accessible price point.
[ USB 3.1 Gen 2 Host (10 Gbps) ] │ ▼ ┌─────────────────────┐ │ RTL9210B Core │◄─── Type-C CC Logic Built-in └──────────┬──────────┘ │ ┌──────────┴──────────┐ ▼ ▼ [ PCIe Gen 3 x2 ] [ SATA III 6.0 Gbps ] (NVMe SSD) (NGFF SSD) Host-Side Interface The "B" revision introduced critical updates over the
The chip features an embedded 32-bit ARM cortex-styled microprocessor. This CPU runs dedicated firmware stored on an external SPI flash memory chip. This architectural choice allows manufacturers to issue firmware updates to patch bugs, adjust power management profiles, and optimize compatibility with newer SSD controller firmware. 2. Pin Configuration and Package Specifications
Disclaimer: Specifications are based on the 2021 published data. Always consult the latest official datasheet from Realtek before finalizing a product design. The Realtek RTL9210B Go to product viewer dialog
Supports SuperSpeed USB Plus (10 Gbps), SuperSpeed (5 Gbps), HighSpeed (480 Mbps), and FullSpeed (12 Mbps) transfer rates.