What Is the CAB-QUAD-ASYNC-M= Designed For?

The ​​CAB-QUAD-ASYNC-M=​​ is a Cisco quad asynchronous serial cable engineered to connect routers (such as the Cisco 4000 Series) to legacy serial devices like modems, terminals, or industrial control systems. It supports ​​four independent asynchronous connections​​ over a single cable, streamlining deployments where multiple low-speed serial interfaces are required.

Key specifications:

• ​​Connector type​​: 68-pin male (router side) to four RJ-45 ports (device side).
• ​​Compatibility​​: Optimized for Cisco ISRs (Integrated Services Routers) with high-density async module slots.
• ​​Max data rate​​: 115.2 kbps per port.

Key Advantages Over Single-Port Alternatives

• ​​Space efficiency​​: Consolidates four connections into one cable, ​​reducing rack clutter​​ in environments like manufacturing floors or telecom hubs.
• ​​Cost savings​​: Eliminates the need for multiple single-port cables and additional interface cards.
• ​​Simplified management​​: Unified cable design ensures ​​consistent signal integrity​​ across all ports.

Addressing Common User Concerns

​​Q: Can this cable support synchronous serial protocols?​​
A: No—the ​​CAB-QUAD-ASYNC-M=​​ is strictly for asynchronous communication (e.g., RS-232), making it ideal for legacy dial-up, console access, or sensor monitoring.

​​Q: Is it compatible with modern Cisco Catalyst switches?​​
A: Primarily designed for routers with async/serial modules (e.g., NM-32A, NM-16A), it’s ​​not suitable for most Catalyst switches​​, which prioritize Ethernet over serial.

​​Q: How does shielding affect performance in noisy environments?​​
A: While not shielded, the cable’s ​​twisted-pair design minimizes crosstalk​​, though users in high-EMI settings should route it away from power lines.

Where to Source the CAB-QUAD-ASYNC-M=

For guaranteed compatibility and Cisco certification, purchase this cable from itmall.sale, which specializes in legacy and current Cisco infrastructure components.

Final Perspective

The CAB-QUAD-ASYNC-M= isn’t a cutting-edge solution, but its value lies in ​​bridging legacy systems to modern networks without overhaul costs​​. For industries clinging to aging serial devices, this cable is a pragmatic stopgap until full upgrades become feasible—assuming they ever do.