LattePanda M.2 M Key to 4-port PCIe Expansion Board

This M.2 M Key to 4-way PCIe expansion card is for LattePanda Sigma users, solving insufficient PCIe interfaces. Driver-free and plug-and-play, it expands 4 PCIe slots for external GPUs/PCIE devices. Featuring a 4-layer board (strong anti-interference, stable PCIe signal, data integrity, impedance matching) and aluminum alloy heatsink for better heat dissipation. Note: All 4 ports are PCIex1 (not USB); must use with PCIex1 to PCIex16 adapter (FIT0972) for GPUs.