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Main image of M.2 (B+M Key) to 4-Port RS232 Serial Card + 1 Parallel Port Expansion Card, WCH384 Chip Industrial Controller Adapter PCIe M.2 to DB9 RS232 and DB25 Parallel Interface

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M.2 (B+M Key) to 4-Port RS232 Serial Card + 1 Parallel Port Expansion Card, WCH384 Chip Industrial Controller Adapter PCIe M.2 to DB9 RS232 and DB25 Parallel Interface

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M.2 (B+M Key) Expansion to RS232 & Parallel Ports Converts an M.2 (B+M Key) slot into 4 RS232 serial ports and 1 parallel port (DB25), allowing flexible connectivity for industrial equipment, CNC machines, and legacy printers.; High-Performance WCH384 Chipset Equipped with the WCH384 controller, ensuring stable communication, accurate signal transmission, and strong compatibility with Windows and Linux operating systems.; Wide Serial Configuration Support Supports data bits 5, 6, 7, 8, stop bits 1 or 2, and parity modes Even, Odd, Mark, Space, Noneideal for precise serial device communication and custom system integration.; Durable Industrial-Grade Design Designed for continuous operation with a temperature range of -40°C to 85°C, ensuring stable performance in harsh environments; compact PCB (main board 22×80mm / 0.87×3.15in, sub board 45×67mm / 1.77×2.64in).; Plug & Play, Broad Compatibility Compatible with Windows 7/8/10/11, Linux, and embedded systems. Perfect for applications such as POS terminals, industrial automation, serial monitoring, and parallel printer control.

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M. 2 (B+M Key) Expansion to RS232 & Parallel Ports Converts an M. 2 (B+M Key) slot into 4 RS232 serial ports and 1 parallel port (DB25), allowing flexible connectivity for industrial equipment, CNC machines, and legacy printers.; High-Performance WCH384 Chipset Equipped with the WCH384 controller, ensuring stable communication, accurate signal transmission, and strong compatibility with Windows and Linux operating systems.; Wide Serial Configuration Support Supports data bits 5, 6, 7, 8, stop bits 1 or 2, and parity modes Even, Odd, Mark, Space, Noneideal for precise serial device communication and custom system integration.

; Durable Industrial-Grade Design Designed for continuous operation with a temperature range of -40°C to 85°C, ensuring stable performance in harsh environments; compact PCB (main board 22×80mm / 0.87 × 3.15 in, sub board 45×67mm / 1.77 × 2.64 in).; Plug & Play, Broad Compatibility Compatible with Windows 7/8/10/11, Linux, and embedded systems. Perfect for applications such as POS terminals, industrial automation, serial monitoring, and parallel printer control.

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First Listed on Newegg	October 18, 2026

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Item#: 9SIC10VM8X6976