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Main image of PCIe to 4 Port RS232 Serial Expansion Card - 9-Pin DB9 COM Port Adapter for Industrial PCs, 4X RS232 Ports Converter with Plug and Play, Support Windows/Linux

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PCIe to 4 Port RS232 Serial Expansion Card - 9-Pin DB9 COM Port Adapter for Industrial PCs, 4X RS232 Ports Converter with Plug and Play, Support Windows/Linux

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"High-Speed & Industrial-Grade Performance", Equipped with AX99100 high-performance chip for ultra-stable operation, low power consumption, and enhanced compatibility. Each of the 4 RS232 ports delivers speeds up to 1MB/s, ideal for industrial automation, PLCs, and high-demand control systems.

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"High-Speed & Industrial-Grade Performance", Equipped with AX99100 high-performance chip for ultra-stable operation, low power consumption, and enhanced compatibility. Each of the 4 RS232 ports delivers speeds up to 1MB/s, ideal for industrial automation, PLCs, and high-demand control systems.

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First Listed on Newegg	June 17, 2026

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Item#: 9SIC73VKZJ7608