000839-09 US Robotics 33.6K Sportster Faxmodem

Introduction

The US Robotics 000839-09 33.6K Sportster External Faxmodem is a compact analogue dial-up modem designed for reliable data and fax communication over PSTN lines. Supporting speeds up to 33.6 Kbps, it provides stable connectivity for legacy systems, remote management access and low-bandwidth applications. The 000839-09 external unit connects via a serial interface, making it suitable for industrial equipment, telecom racks and enterprise backup links. Often sourced as refurbished networking equipment, it remains a practical solution for maintaining analogue communication environments.

Key Features & Benefits

• 33.6 Kbps data rate – Supports V.34 dial-up communication
• Fax capability – Enables Group 3 fax transmission
• External desktop form factor – Simple installation and visual status indicators
• Serial (RS-232) interface – Compatible with legacy servers and network devices
• AT command set support – Broad compatibility with modem-based applications
• PSTN connectivity – Designed for analogue telephone lines

Ideal For

📠 Legacy fax communication systems
🖥 Remote equipment management over dial-up
🏭 Industrial and embedded system connectivity
🔄 Backup connectivity for critical infrastructure
🛠 Maintenance of legacy analogue environments

Specifications at a Glance

Form factor: External desktop modem
Interfaces/ports: RS-232 serial port; RJ-11 telephone line connection
Bands/standards: V.34 data; Group 3 fax
Throughput: Up to 33.6 Kbps
Power: External power adaptor (rating Spec not provided.)
Dimensions/weight: Spec not provided.
Operating temp: Spec not provided.
Certificates (RoHS/CE): Spec not provided.

Known limitations: Designed for analogue PSTN lines only; not compatible with broadband-only or VoIP-only environments without analogue line support.

Common aliases / cross-refs: USR 33.6K Sportster; US Robotics 000839-09; Sportster external fax modem

Trust, Testing & Service

All hardware supplied by PICS Telecom is professionally inspected and tested prior to dispatch to ensure reliable functionality. Refurbished units undergo quality control checks for performance and physical condition. Warranty terms, pricing and availability are confirmed at quotation stage. PICS supports sustainable telecom infrastructure through responsible reuse and zero-to-landfill initiatives.

Conclusion

The US Robotics 000839-09 33.6K Sportster External Faxmodem provides dependable analogue dial-up and fax connectivity for legacy systems. Contact PICS Telecom via https://www.picstelecom.com or browse current availability at https://marketplace.picstelecom.com for pricing and lead times