The new Xena Networks 5-speed dual-media test module M1QSFP28SFP28 is a versatile test solution offering five different Ethernet network speeds: 10GE, 25GE, 40GE, 50GE and 100GE. This unique test module lets users dynamically choose between two different physical transceiver cages and form factors. The first is a single QSFP28/QSFP+ transceiver cage, and the second is two SFP28/SFP+ transceiver cages.
When using the QSFP28/QSFP+ cage, the user can dynamically select between the following modes of operation: 4x10GE / 1x40GE / 4x25GE / 2x50GE / 1x100GE test ports, and when using the dual SFP28 cages: 2 x 10GE / 2x25GE.
The unique combination of five different Ethernet network speeds and multiple physical optical transceiver form factors, makes the M1QSFP28SFP28 a versatile solution for performance and functional testing of network infrastructure and Ethernet equipment such as taps, switches, routers, NICs, packet-brokers, and backhaul platforms.

http://xenanetworks.com/m1qsfp28sfp28-new-xena-networks-5-speed-dual-media-test-module/