The Ridge comes with a PCI 4.0 Riser w/extension. As for USB, this is what the board supports.
USB
2x USB 2.0 (Front)
2x USB 3.2 Gen1 Type A (Rear)
2x USB 3.2 Gen1 Type A (Front)
3x USB 3.2 Gen2 Type A (Rear)
1x USB 3.2 Gen2 Type C (Front)
1x USB 3.2 Gen2x2 Type C (Rear)
Price dropped again bump. Right now, you are getting $1950 in hardware for $1200. I would think that's a deal. Just add a GPU and you have a very capable system with great asthetics.