The following aspects are to be considered when it comes to efficiently dimensioning your UPS system and choosing the suitable size: Choosing the right size:   Step 1:   Identify the power requirement of the computer and devices that should be secured (indicated on the type plate of the power supply unit). Identify further hardware that will be connected to the system (such as printers, monitors, etc.) and their power requirement. [INFO] Laser printers should not be secured via the UPS system. Step 2:   Prepare a list of all the abovementioned devices and identify the total value.     Step 3:   Consider additional resources in the event of system enhancements (20-45%).   Step 4:   Forward us this information and we will help you with the dimensioning of your system.You can also multiply the total power requirement by 1.4 in order to determine the VA performance and use our product folders to choose the UPS system that has a slightly higher nominal value.   Step 5:   Choose monitoring systems such as SNMP, Life-monitoring and the like, as well as a suitable shut-down software.