The JBX01750 10GBASE-BX40-U SFP+ Transceiver represents a premium solution for enterprise networking infrastructure requiring extended-distance optical connectivity. This advanced module is engineered to transmit and receive 10 Gigabit Ethernet signals over distances up to 40 kilometers using single-mode fiber (SMF), with a standard 9/125 core diameter design that ensures optimal signal integrity. **Key Technical Specifications:** This transceiver operates on IEEE 802.3ae protocol standards and meets SFF-8431 and SFF-8472 specifications. The simplex LC/UPC fiber connection provides a secure, low-loss interface essential for long-distance transmission. Operating temperature range of 0-70°C (32-158°F) ensures reliable performance in diverse data center and network environments. The metal case construction provides electromagnetic shielding and mechanical protection for the internal laser transmitter and sensitive optical components. **HPE Compatibility & Integration:** Designed as a direct replacement for HPE OEM part number R9X55A, this module integrates seamlessly into HPE networking infrastructure. Compatible with HPE switches, routers, and networking equipment featuring SFP+ slots, enabling straightforward upgrades and expansions without requiring network redesign. **Safety & Compliance:** Ensuring workplace safety and regulatory adherence, this transceiver carries Class 1 laser certification, TUV, UL, and FDA approvals (21CFR 1040.10). It fully complies with RoHS/ELV directives and EU directive 2002/95/EC, eliminating hazardous substances while maintaining superior performance standards. **Ideal Applications:** Perfect for connecting data centers, network hubs, and remote office locations requiring high-speed, reliable connectivity over extended distances. Commonly deployed in telecommunications infrastructure, enterprise WANs, and campus area networks (CANs). The 40km range eliminates distance constraints that typically limit copper-based solutions. **Installation & Support:** This module features compact 5x4x2mm dimensions for space-efficient deployment. Custom brand programming is available for organizational standardization. Backed by a 90-day limited warranty and shipped from distribution centers in California and South Carolina with complimentary standard shipping on orders exceeding $99, this product offers exceptional value and support for network professionals.