Support setting: angle 45 degree, XY distance 1.5mm, Z distance 0.2mm.
Cooling FAN: Chassis cooling is optional, a 3010 fan with 3mm screw hole distance 25mm, modify if it is a 24mm distance you have before printing. M3x15mm screws/nuts x 4 for installation while it is wired to the 12V aux on RAMPS 1.4.
The power jack is a 5.5mm/2.5mm out/in design, within a threaded bolt. Modified the hole diameter if you have different one in dimension.
Same as the USB extender cable and the power switch, slight difference among similar product, make sure the screw hole fit yours before printing. M3x8mm screws x 2 for the USB cable in my case. Assemble USB cable before Mega 2560 installed since the crowded space might not allow to do so after that.
M3x4mm x 3 for the Arduino installation, M3x6mm(4mm~10mm will do) for the 2004 LCD installation.