High-Speed M.2 M Key to PCIe x4 Adapter Board for Enhanced System Expansion (Compatible with LattePanda Sigma):
This is an M.2 M Key to 4-way PCIe expansion board designed just for LattePanda Sigma customers. It efficiently addresses the issue of insufficient PCIe interfaces. It requires no drivers and is ready to use right away. It can be used in conjunction with the Sigma motherboard to add four more PCIe connections for connecting external multi-channel graphics cards or other PCIe devices.
The expansion card employs a 4-layer circuit board with excellent anti-interference properties, ensuring the stability of PCIe high-speed signal transmission, data integrity, and impedance matching. To improve operational stability, the chip is additionally fitted with an aluminum alloy heat sink for enhanced heat dissipation.

Note:All 4 ports are PCIex1, transmitting PCIe signals, not USB data! It must be used with aPCIex1 to PCIex16 adapter cardto connect an external PCIe device.

Features:

4 PCIe interfaces
With heat sink, performance is more stable
Compatible with multiple systems

Resources:
Product wiki
Package Content:
M.2 M Key to PCIex4 Expansion Board x1