GE PMC422-LAMD2是一种通用八端口串行控制器，由GE Fanuc/Ramix制造。这种控制器实现了PMC（PCI夹层卡）格式，它具有一个Octal UART串行接口，与最常用的组件（16C550兼容寄存器组）兼容，并完全支持PCI属性（例如，32位数据传输），以提高性能。

It is a universal eight port serial controller manufactured by GE Fanuc/Ramix. This controller implements the PMC (PCI Mezzanine Card) format, which has an Octal UART serial interface, is compatible with the most commonly used components (16C550 compatible register set), and fully supports PCI attributes (such as 32-bit data transfer) to improve performance.