Reference Guide

Dell Latitude Tablet and 2-in-1 System Reimage “How-To” Guide
For Latitude 7275/XPS 9250, we recommended to additional enable Thunderbolt Boot Support for
TypeC USB Dock device. System Configuration->USB/Thunderbolt Configuration->Enable Thunderbolt Boot
Support. The Type-C device will be identified and boot to external device via Type-C.
2. In order to boot to PXE from an Ethernet network device, the UEFI network stack must be enabled.
General->Advanced Boot Options->Enable Legacy Option ROMs/Enable UEFI Network Stacks
For UEFI Mode: Enable IEFI Netork Stack
For Legacy Mode: Enable Legacy Option (The additional seeting for Enable Legacy Option ROM, Secure
Boot Enable > Disable)