Hi You'll need the Windows 10 nic driver for this. Regardless of what OS you are deploying, as this is the WinPE version. Download that from Dell and as a quick test, copy it to the usb boot media, then at the TS wizard screen press f8 for command prompt. You can then run drvload and point it to the nic driver you copied. It will then give you an IP address. Once confirmed it works add to sccm and your boot wim and recreate the boot media.