Round or Slot port?

Aero port vs Slot port - slot port vs round port Ports & Slots 1 Security-lock slot 2 Power connector slot harian login • slotport—Slot and port where the E-Series Server is installed round-trip minavgmax = 124 ms Getting Started Guide for Cisco

slot luck As for round vs slot, I'm still pretty new to this and from what I had read, that round ported boxes can be smaller due to the port taking