The JBX01139 40GBASE-SR2 QSFP+ transceiver module represents a cost-effective solution for organizations requiring high-speed optical networking without the expense of single-mode infrastructure. This 40-gigabit module excels in data center, enterprise campus, and service provider environments where multimode fiber backbone networks are already established. **Technical Specifications:** The module utilizes a QSFP+ form factor with compact dimensions (5" x 4" x 2"), allowing seamless integration into existing network equipment. Supporting 40 gigabit Ethernet speeds over OM4 grade multimode fiber, it provides 150-meter transmission distances—ideal for inter-rack connectivity, floor-to-floor data center links, and campus networks. Dual wavelength operation at 850nm and 900nm offers flexibility in mixed-equipment environments. **Connectivity & Compatibility:** Duplex LC/UPC fiber connectors ensure secure, low-loss connections with industry-standard mating cycles. Direct compatibility with Dell networking equipment (replacing part numbers 407-BBXT and 407-BBYC) simplifies procurement and deployment. The module qualifies under IEEE 802.3ba standards and SFF-8436 specifications for assured interoperability. **Quality & Safety:** Manufactured with premium materials including a protective metal case and precision laser transmitter, the JBX01139 delivers consistent performance over its operational lifespan. Comprehensive safety certifications—Class 1 Laser, TUV, UL/FDA approval—ensure compliance with international safety standards. RoHS and ELV directives guarantee environmental responsibility. **Reliability & Support:** The module operates reliably across extended temperature ranges (0-70°C / 32-158°F), accommodating both climate-controlled data centers and field environments. Custom brand programming is available for white-label and OEM applications. A 90-day limited warranty protects your investment. **Advantages Over Alternatives:** Compared to single-mode SR/LR transceivers, this multimode solution eliminates expensive long-distance fiber infrastructure while maintaining robust performance for typical enterprise distances. The 40GB capacity provides future-proof throughput without transitioning to 100G technology investments. **Shipping & Availability:** Ships via standard free shipping on orders exceeding $99 from regional distribution hubs in Danville, CA and Beaufort, SC, ensuring prompt delivery. Quality assurance and compatibility testing precede every shipment.