The JBX02165 1000BASE-BX40-D SFP transceiver represents professional-grade optical networking technology engineered for enterprises requiring long-distance, reliable fiber optic connectivity. With a 40km transmission range over single-mode fiber, this module excels in metropolitan area networks, campus interconnections, and long-haul data center links. **Key Technical Features:** Operating at 1Gbps with wavelengths of 1490/1310nm in bidirectional mode, this transceiver utilizes a 9/125 single-mode fiber core for optimal signal propagation. The simplex LC/UPC connector provides industry-standard connectivity with minimal return loss, while the metal case design ensures durability and electromagnetic shielding. **Performance & Reliability:** Qualified to SFF-8472 extended specifications and exceeding IEEE 802.3ah standards for BiDi applications, this module delivers consistent performance across the -40°C to 85°C operating temperature range. The integrated laser transmitter provides stable output power with minimal jitter for clean signal transmission. **Certification & Compliance:** Designed with safety as a priority, this transceiver carries Class 1 Laser certification, FDA 21CFR 1040.10 approval, and TUV/UL validation. RoHS and ELV compliance demonstrate environmental responsibility in enterprise networking solutions. **Application & Compatibility:** As a direct replacement for Brocade E1MG-BXD40-T modules, this transceiver integrates seamlessly into existing Brocade switch infrastructure without configuration changes. Ideal for network administrators seeking cost-effective alternatives for SFP port upgrades, long-distance links, or emergency replacements. **Support & Warranty:** Backed by a 90-day limited warranty, this module includes custom brand programming availability for OEM integration. Free standard shipping on orders over $99 with multiple warehouse locations ensure rapid deployment. Ships from Danville, CA or Beaufort, SC for swift delivery to your network infrastructure.