Question about ASUS ROG Strix Z490-E Gaming

Well, I have connected 13 fans. But there are a total of 8 connections:
1x CPU
1x CPU OPT
1x AiO
2x chassis
1x M.2
1x W_PUMP
1x VRM heatsink
I have used a splitter to connect more fans.
All slots are in the 4Pin version.