The Dell Latitude 5420 can natively support up to three monitors. This is achieved by utilizing the built-in Intel UHD Graphics 630 chipset combined with the two Thunderbolt 3 ports that are also included in the system. Optionally, users can purchase a separate graphics card to be installed in the system's PCIe x16 slot, allowing up to four monitors to be used simultaneously. In terms of resolutions, the Latitude 5420 is limited to a maximum of 4K (3840x2160) at 60Hz on a single display or 1080p (1920x1080) at 144Hz across multiple displays. Users looking to connect their monitors using DisplayPort will need to use an adapter, as the Thunderbolt 3 ports only support HDMI and DP 1.4 protocols.