While the "Ob" and "S4lv0.2" markings often refer to package tracing or specific lot revisions (commonly seen on QFN packages), the functional specifications are covered under the standard KSZ8081 family documentation.
: Requires professional handling via an LED Panel bonding machine (COF punching) for installation; it is not a plug-and-play component for casual DIY repair. Typical Signal Processing Features Ksz80 Ob S4lv0.2 Datasheet
Magnetic Integration: A 1:1 transformer (magnetics) is required between the PHY and the RJ45 connector to provide galvanic isolation. While the "Ob" and "S4lv0