When we zoom in on the frontpanel header block we see that everything is nicelynoted down on the PCB.
PCI slots wise we get four mechanical x16 PCie slots which can be configured as x16/x16; x16/x8/x8 and x8/x8/x8/x8. There are two PCie x1 slots and now missing is that old fashioned PCI slot.
Ehm let me see... what more can I say, ah yes, in total there are 2 x CPU Fan connector(s), 3 x Chassis Fan connector(s) and 3 x Optional Fan connector(s) to be found. Alright, we've confused you enough with all the data.