Driver-free, plug and play. Expandable 4-way PCIe Gen 2x1. Quick access to CM4 official expansion board power. High-performance main control chip: Equipped with an ASMedia chip, a subsidiary of , which supports PCIe 2.0 full-speed transmission and stable operation, significantly improving performance compared to general chips. Support for auxiliary power sockets: Supports PCIe interface power supply while providing auxiliary power sockets, supporting 5V/12V power supply for stable and sufficient power. Color: Black Material: PC The actual product may have slight color or appearance differences, which does not affect usage. Package contents: 1 * Expansion card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.