The JBX01843 10GBASE-LR SFP+ optical transceiver represents a cost-effective solution for organizations seeking to upgrade or expand their high-speed network infrastructure. As a direct equivalent to HPE's 455886-B21 module, it provides seamless compatibility with existing HPE equipment while delivering exceptional performance and reliability. **Key Technical Specifications:** This single-mode fiber transceiver operates at 10 Gigabit Ethernet speeds with 1310nm laser wavelength technology, enabling transmission distances up to 10 kilometers over standard single-mode fiber. The module complies with IEEE 802.3ae specifications and SFF-8431/SFF-8472 standards, ensuring interoperability with certified network equipment. The duplex LC/UPC connectors provide secure, low-loss connections with industry-standard fiber optic cabling. **Superior Safety & Compliance:** Manufactured to stringent international standards, the JBX01843 carries Class 1 Laser certification, UL/FDA approval (21CFR 1040.10), and TÜV validation. The module is fully RoHS compliant (EU directive 2002/95/EC) and ELV-certified, meeting environmental regulations for global deployment. Its metal case construction with integrated laser transmitter ensures long-term durability and heat dissipation. **Ideal Applications:** Perfect for data center interconnects, campus network backbone connections, and enterprise-grade metropolitan area networks (MANs). The 10km transmission range makes it suitable for connecting multiple buildings or facilities within reasonable distances. Organizations upgrading HPE network infrastructure, expanding fiber optic networks, or requiring reliable 10G connectivity will find this transceiver an excellent choice. **Warranty & Support:** Backed by a 90-day limited warranty and available for rapid shipment from US locations (Danville, CA and Beaufort, SC), this module includes custom brand programming options for OEM requirements. Free standard shipping applies to orders exceeding $99, making it an economical networking solution.