The Moxa CBL‑M44M9 is a high-quality breakout cable that converts a single DB44 male connector into four standard DB9 male connectors. Designed for industrial and embedded applications, this cable allows you to connect multiple RS‑232 devices (such as PLCs, sensors, modems, or serial peripherals) to a single multiport serial interface card or embedded module, simplifying wiring and maintaining reliable signal transmission.
Technical Specification
Moxa CBL‑M44M9 / CBL‑M44M9x4‑50 – 4‑Port DB44 to DB9 Serial Cable
Part Number: CBL‑M44M9x4‑50 (commonly referenced for Moxa serial cards)
Type: Serial connection cable — passive breakout cable
Standard: RS‑232 (serial communication standard, typical for DB9 ports)
🔌 Connectors
This configuration lets you take a single 44‑pin serial port on a multiport serial interface card or embedded module and break it out into four separate DB9 serial connectors, each of which can connect to an individual RS‑232 device.
📏 Physical & Cable Specs
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Cable Length: 50 cm (approx. 19.7 in)
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Cable Type: Multi‑wire serial cable (shielded for reliable communication; industrial grade)
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Connectors: Rugged D‑Sub metal shell connectors designed for industrial environments
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Gender: Male DB44 → Male DB9 (x4)
⚙️ Functional Details
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Purpose: Breaks a high‑density DB44 serial port into four standard DB9 serial ports for device connections.
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Usage: Typically used with Moxa 4‑port serial interface cards or embedded solutions (e.g., CP‑104UL, CP‑114EL, CP‑134U family) to provide individual serial connections to peripherals, PLCs, sensors, or other RS‑232 devices.
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Passive Cable: No active electronics — purely wiring connections matching each port’s signals to the DB9 outputs
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