http://www.obdspace.com/en/Products/BMW-OPS-SSS-product_26.html
Product Name:BMW OPS&SSS
Part No.: A15
Net Weight: 7kg
BMW SSS & OPS
On vehicle models from the E65 on, BMW is for the first time using fibre-optic cables as standard for communication between control units.The optical buses are notable for their high data transmission rate and they are not susceptible to electromagnetic interference. The optical buses in question are the MOST bus, primarily used for in-car entertainment electronics, and the byteflight bus, which serves predominantly safety-critical functions.
BMW OPS&SSS