Re: EX4550 VC questions

Are you sure you are installing a 2x32GE VC Module?  Look at page 26-28 here to confirm:

https://www.juniper.net/documentation/en_US/release-independent/junos/information-products/pathway-pages/ex-series/ex4550/ex4550.pdf

I also assume you are installing this in rear expansion slot, not front, yes?  Could be as simple as bad hardware as well.

Please send the following as well:

show chassis hardware

show system software