A system and method are provided for five-level non-casual channel equalization in a communications system. A chip is transferred into an impression provided in a substrate made of insulating material. The first opening is in surface tension contact with the fluid to be ejected. The spur mitigation unit can determine whether the power of the previous estimate of the spur signal is greater than the power of the current estimate of the spur signal. The strut is attached to the strut bracket via a strut standoff using an E-clip retaining ring.