The Waveshare 19091 PCI-E TO M.2 ADAPTER supports Raspberry Pi Compute Module 4 and is an adapter for NVMe Protocol M.2 SSD, for Faster Reading/Writing, Improving Efficiency.
Compatible With Multi PCI-E Specifications
Supports Base Boards With PCI-E×1 / ×4 / ×8 / ×16 Socket, Supports CM4
![](https://www.waveshare.com/img/devkit/accBoard/PCIe-TO-M.2-A/PCIe-TO-M.2-A-details-3.jpg)
Faster Reading/Writing
Faster Reading/Writing Speed Than HDD, Greatly Boosting Drive Performance
![](https://www.waveshare.com/img/devkit/accBoard/PCIe-TO-M.2-A/PCIe-TO-M.2-A-details-5.jpg)
* The data above comes from Waveshare testing, for reference only.
NVMe Drive Protocol Support
![](https://www.waveshare.com/img/devkit/accBoard/PCIe-TO-M.2-A/PCIe-TO-M.2-A-details-7.jpg)
Compatible With Different Sizes Of M.2 SSD
![](https://www.waveshare.com/img/devkit/accBoard/PCIe-TO-M.2-A/PCIe-TO-M.2-A-details-9.jpg)
Onboard Operating Indicator
The LED Lights Up When Power-On, And Keeps Blinking While Reading/Writing
![](https://www.waveshare.com/img/devkit/accBoard/PCIe-TO-M.2-A/PCIe-TO-M.2-A-details-11.jpg)
Outline Dimensions
![](https://www.waveshare.com/img/devkit/accBoard/PCIe-TO-M.2-A/PCIe-TO-M.2-A-details-size.jpg)