The JBX01246 40GBASE-LR4L QSFP+ transceiver represents a versatile, cost-effective solution for modern high-speed network deployments. This optical transceiver module is engineered to deliver exceptional performance in demanding enterprise environments where reliable 40 Gigabit connectivity is essential. **Technical Specifications:** This transceiver operates at 40GB data rates using the LR4L variant, which supports transmission distances up to 2 kilometers over standard single-mode fiber (SMF) infrastructure. The 9/125 micron fiber core specification ensures compatibility with existing telecommunications and data center fiber installations. The Duplex LC/UPC connector configuration provides standard, industry-proven connectivity with minimal signal loss and superior durability. **Performance & Reliability:** Manufactured with a robust metal case and integrated laser transmitter, the JBX01246 delivers consistent performance across extended operating temperatures from 0 to 70°C (32 to 158°F). Its IEEE 802.3ba qualification ensures interoperability and compliance with current networking standards. This module carries multiple safety certifications including Class 1 Laser designation, TUV, UL, and FDA compliance (21CFR 1040.10), making it suitable for regulated environments. **Compatibility & Integration:** Designed as a direct replacement for Cisco WSP-Q40GLR4L modules, this transceiver integrates seamlessly into existing Cisco infrastructure without requiring firmware updates or reconfiguration. The QSFP+ form factor ensures compatibility with standard optical transceiver slots found in enterprise switches and routers. **Environmental & Compliance:** Fully RoHS compliant and manufactured according to EU directive 2002/95/EC (ELV), this transceiver meets modern environmental standards. Custom brand programming is available for OEM implementations. **Value & Support:** Each module includes a 90-day limited warranty covering manufacturing defects. Benefit from free standard shipping on orders exceeding $99, with fulfillment from convenient West Coast and Southeast locations. This combination of performance, reliability, and affordability makes the JBX01246 an excellent choice for network upgrades and expansions.