Addon 407-BBVI-AO Addon Dell 407-bbvi Compatible Taa Compliant 40gbase-er4 Qsfp+ Transceiver (smf,

this Dell" 407-bbvi Compatible Qsfp+ Transceiver Provides 40gbase-er4 Throughput Up To 40km Over Single-mode Fiber (smf) Using Wavelengths Between 127...