MTBF of UP3043K-3

I would like to know the MTBF information of UP3043K-3 (Part No:10000895E) that is the power supply module for PortServer II.


The MTBF for the 10000895 PS II power supply is 50,000 hours.

Thank you.
My PortServers are running since 2001. Then I will make replacement plan next year.