Dell Venue 10 Pro 5056 Imaging Recommendations page 5

Dell Venue 10 Pro 5056 / 8 Pro 5855 Imaging Recommendations
2. In order to boot to PXE from an Ethernet network device, the UEFI network stack must be enabled.
System Configuration->Integrated NIC->Enable UEFI Network Stack - Enable
3. In order for the system to detect and enumerate all the connected USB device, FastBoot mode must be set
to "Thorough".
Post Behavior->Fastboot - Thorough