The CS connector, developed by Senko Advanced Components, is a robust and high-performance fiber optic connector designed for various telecommunications and networking applications. 25-mm fully-ceramic ferrule technology. It belongs to the category of Very Small Form Factor (VSFF) plug connectors. CS® connectors find their. TINLEY PARK, Ill. — (February 2, 2021) — As bandwidth speeds continue to increase, 200G/400G applications are becoming commonplace in high performance data center environments, requiring enhanced capabilities at the rack level. Its compact size increases breakout mode options and enables increased efficiency for 25G-200G deployments at the rack, saving space, time and cost.