The LevelOne Quad Small Form-factor Pluggable 28 (QSFP28) active optic cable is further increase performance for applications that are I/O-intensive for 100G Ethernet. This connecting system offer 4 channels and maximun 100Gbps which are based on the proprietary technique Chip on board (COB), This module provides high performance and excellent efficiency in optical communication, offers system developers and planners a high degree of flexibility.