6GK5491-2AE00-8AA2 SIEMENS ⍾ 6GK54912AE008AA2

********** spare part ********* SCALANCE X-400 accessories, media module MM491-2, 2x 100 Mbit/s multimode BFOC, hot swappable, labeling field.

SCALANCE X-400 ACCESORIES, MEDIA MODULE MM491-2LD, 2 X 100MBIT/S SINGLE MODE BFOC, HOT SWAPABLE, INSCRIPTION FIELD