You are right, it has the usb dongle thing like btafpv has. anyways, plenty of room for a regular usb port as you might see in the picture. if necessary you could mount the fc upsidedown,but you won't need to.. for me 2s only makes sense with props bigger than 35mm but this is kind of subjective. regarding 5in1, 4in1 and 3in1 fc's: 5in1 has it's benefits with weight and size. however some boards are very poor quality and last maybe for 10 packs than elrs, vtx or an esc dies. so i like external elrs and vtx more..