: Supports PCIe NVMe drives only . If you insert an M.2 SATA drive into an enclosure using this chip, the drive will not be recognized.
Beyond the basic specs, the datasheet provides critical information for engineers and advanced users.
: Operates primarily on 3.3V and 1.2V/0.9V core voltages. It features integrated switching regulators to reduce bill-of-materials (BOM) costs. 3. Power Management and Efficiency rtl9210b datasheet
Supports up to 16 Gbps via PCIe (2 lanes at 8 Gbps each). However, it is capped overall by the upstream USB line.
The datasheet confirms full compliance with the following standards: For legacy compatibility. : Supports PCIe NVMe drives only
: Restricted by the SATA III bus itself, capping sequential speeds between 500 MB/s and 560 MB/s . 5. Firmware Customization and Config Tool
The is a high-performance, low-power dual-protocol bridge controller that bridges USB to both PCI Express (NVMe) and SATA interfaces. According to the official Realtek RTL9210B Product Specifications , this integrated circuit (IC) allows engineers and consumer electronics manufacturers to develop external storage solutions that accept both M.2 NVMe (PCIe) and M.2 SATA (NGFF) solid-state drives seamlessly. : Operates primarily on 3
The RTL9210B is a USB 3.0-to-PCI Express (PCIe) bridge chip that enables developers to create USB-to-PCI adapters with high-speed data transfer rates. This chip supports USB 3.0 speeds of up to 5 Gbps and PCIe 2.0 speeds of up to 5 Gbps. The RTL9210B is designed to be highly compatible with various operating systems, including Windows, Linux, and macOS.
The 68-pin QFN is intimidating. Based on the reference design and public schematics, here are the critical groups you must wire correctly.
Early RTL9210B firmware (v1.19.x) had a "safe eject" failure on macOS. The datasheet errata fixed this in v1.27.x, requiring an SPI flash (Winbond 25Q16) of at least 2MB.