ECS-160-20-4X 16.000MHZ ECS-160-20-4X-B ECS-160-20-4X-B-DN ECS-160-20-4XDN ECS-160-20-4X-DN ECS-160-20-4X-DU ECS-160-20-4X-EM ECS-160-20-5G3DS-TR ECS-160-20-5G3XDS-TR ECS-160-20-5P