• Cisco SM-X-64A async serial module with silver circuit board and green components
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Cisco

Cisco SM-X-64A | Async serial SM | 64x RS-232 async via octal fan-out | ISR 4300/4400

SM-X-64A

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Description

High-density asynchronous serial service module providing 64 RS-232 async ports for ISR 4300/4400 routers. Consolidate console access, modem banks, POS/terminal endpoints, or out-of-band management into a single chassis. Uses external octal fan-out cables (sold separately) to present RJ-45/DB-style connectors as required. Supports per-port flow control and monitoring for reliable legacy serial integrations.

Features

- Consolidates large numbers of serial endpoints into one router
- Flexible cabling with octal fan-out options
- Per-port flow control and monitoring
- Ideal for out-of-band and legacy serial environments
- Tight integration with ISR routing, security, and management

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Interface type: RS-232 asynchronous serial
- Port density: 64 async ports via external octal fan-out cables (not included)
- Flow control: Hardware (RTS/CTS) and software (XON/XOFF) support
- Use cases: Console aggregation, modem banks, POS/terminal, OOB management, industrial/SCADA
- Form factor: SM-X service module for ISR 4300/4400

FAQs

Q: What cables do I need to break out the 64 ports?
A: Use compatible octal async fan-out cable kits to present RJ-45 or DB-type connectors, depending on your devices.

Q: Are the octal cables included?
A: No. Fan-out cables are sold separately.

Q: What serial speeds are supported?
A: Typical RS-232 console and terminal rates are supported; consult platform release notes for detailed per-port rate limits.

Q: Can I access attached consoles over the network?
A: Yes. The router can provide reverse Telnet/SSH to the async ports for remote console access, subject to configuration.

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