How can I know what PS2 version my laser is compatible with?

I have three version 4 PS2's, a version 6, and a version 9. It looks just like the laser in the version 9 PS2. Is it compatible or will it only work in a specific version?

The laser has two stickers on the bottom:

A green one: 6435065G5
and A pink one: GCL53R62F

Thanks.