The loopback module is a 40Gbps Quad Small Form Factor Pluggable QSFP+ loopback module for testing QSFP+ transceiver ports on host/system boards. By substituting a full-featured QSFP+ transceiver, the electrical loopback provides a cost effective method for QSFP+ testing
Note: The FS P/N is changed from QSFP-LB to QSFP-SFP10G-CVR, but the product is the same. Only the FS P/N has been changed.