X2 and XENPAK to SFP+ converters
X2 and XENPAK are early transceiver form factors for 10Gbps services. These are replaced by the smaller and more cost-effective SFP+ transceivers. There are still equipment with X2 and XENPAK ports in operation and the converter modules enables usage of SFP+ transceivers instead. The lower cost and the ability to have a focused spare part stock has a positive effect on the total cost of ownership (TCO).