Dell does not include RTC reset jumpers on the motherboards of its latest OptiPlex and Dell Precision desktops. You can find out more about this on the following article:
Dell does not include Password clear Jumpers on the motherboards of its latest OptiPlex and Dell Precision desktops:
OptiPlex and Dell Precision desktops have added new error codes to the laptop style of Flash Light Emitting Diode (LED) diagnostic indicators. These were introduced on the last generation of desktops. You can use the following articles to identify any start up error on your new desktop:
The BIOS on the latest OptiPlex and Dell Precision desktops does not support Legacy Mode. Dell only supports Unified Extensible Firmware Interface (UEFI) mode on its new devices. You can find out more from the following article:
There are Intel Core processors that end with the letter F. Or Intel Core X-series Processors (processors with a number ending with X.) These types of intel Central Processor Unit (CPU) do not have the Intel Processors Graphics integrated on to them. You can look up the processors from the article below from Intel support pages:
If you purchase an OptiPlex or Dell Precision desktop with one of these CPUs, the non-active video ports are blanked off.