The ASM1184e is a PCIe packet switch with one PCIe x1 Gen2 upstream port and four PCIe x1 Gen2 downstream ports, extending PCIe connectivity for motherboards or embedded systems. It complies with PCIe Base SPEC 2.0, supporting backward compatibility with SPEC 1.1 & 1.0a, and features PCIe power management, low latency, integrated clock buffer, and an I2C interface for debugging.