This Prusa I3 A pro 3D printer is streamlined and optimized based on the previous Geeetech Prusa Aluminum I3 3D printer. This Prusa I3 A pro has the following features. 3-in-1 3D printer control box As you can see, the most obvious modification is that we add a 3-in-1 3D printer control box for this Prusa I3 A pro which gathers the motherboard, power supply and LCD Cpanel in one box, saving the space taken by the printer and bringing you a neat and organized desktop, most importantly, the power supply is installed inside the control box now, which is not only for protecting the power supply, but also for eliminating unnecessary dangers, protecting your family and your pets. Higher transmission accuracy of Z-axis Z-axis adopts high-precision lead screw which is able to convert rotary motion to linear motion. The lead screw features high accuracy, reversibility and high efficiency. It can achieve accurate micro-feeding to ensure printing precision, and high-speed feeding to ensure fast printing speed. Easy assembly, easy debuggingHigh precision machined parts and well-designed mounting holes make the installation process simple and fast. The control box is already assembled by us, what you need to install is only the body, which saves a lot of time for you. The detailed assembly manual makes your DIY assembly easy and time-saving. Detailed instructions provide you with convenient debugging guidance. Reserved design for upgradingIn consideration of your need to upgrade the extruder in the future, we use reserved design on this printer and you can upgrade any part. This kind of design provides you with more choices of revamping this printer and more ways to use it. Visible parts, convenient for trouble shootingCompared with the box-type printer, Prusa I3 3D printer DIY kit is more suitable for starters. All the parts are visible, and you can easy access to those parts. It is very convenient for for trouble shooting when you are using the printer.