* The IEEE has yet to officially give a distance for 10GBASE-S on OM4 fiber. 
The distances are decided by the IEEE in 802.3, not the TIA or ISO/IEC cabling standards. 
Some glass vendors say 500 m, but most are now quoting “up to 550 m”.

WHAT IS OM4?
OM4 is a laser-optimized, high-bandwidth 50μm multimode
cabled fibre defined in IEC (ISO/IEC 11801), EN 50173-1 and TIA/
EIA 492AAAD. OM4 provides higher bandwidth compared to
OM3 when measured at 850nm.

WHAT IS THE BENEFIT OF OM4?
Higher bandwidth allows longer channel lengths for high speed
applications and provides more head room for richer network design.
Typical implementation of OM4 is for requirements between 300m and
550m at 10Gb/s or between 100m and 125m at 40Gb/s or 100Gb/s.