CVR-QSFP-SFP10G 40G QSFP+ to 10G SFP+ adapter converter module provides a cost-effective and flexibility transition from 40 Gigabit Ethernet to 10G. It allows smooth migration to 40 Gigabit Ethernet by providing an option to use lower-speed Enhanced Small Form-Factor Pluggable (SFP+) modules in empty QSFP ports or when the other end of the network is running at lower speeds. This adapter maximizing the use of high-density 40 Gigabit Ethernet QSFP platforms and it supports all SFP+ optics, see below info: