I have been researching various threads but have not found anything definitive. Learned a lot though but not what I was looking for. I have a Conshelf SE2 that has 1 HP port and 4 LP ports. Does anyone have a Conshelf SE that can confirm for me how many HP and LP ports are on their first stage? Was expecting the SE to be same but the one I have has only 1 HP port and 2 LP ports. I acquired this set used and was wondering if the 1st stage has been swapped out for an older Conshelf. The 2nd Stage is Black Plastic and is Label "US Divers Conshelf SE". The first stage only has a serial no.