on base it can rotate 360, but upper arm can rotate 360 too? i am talking about the middle joint, can it rotate 360 too or its fixed? i head ds200 can not rotate on that joint where ds90 can
D90 has 2 usb slot on the base fixture and the design of its arm has a curvature on it. They both support 9kmax weight, 15-32" panel, support vesa 100x100mm.