Dear friend!
Their differences are as follows:
1. The HG8145V5 is used for carrier networks, and the EG8145V5 is used for enterprise networks.
2. The default user name and password are different.
3. Different optical ports: HG8145v5 supports SC/UPC and SC/APC, and EG8145v5 supports only SC/APC.
4. They have different energy-saving functions. The HG8145v5 does not support the COC V5 function, but the EG8145v5 supports only the COC V5 function.
HG8145V5 Datasheet:

EG8145V5 Datasheet:



Thank you!