Board controllers, GPUs, most PCIe devices, even RAM modules do. Your network card is by far not the only thing in your PC that has identification.

By the way, that on-board network card might still be queryable if you know how – it's not really defined what 'disabling it in the BIOS' (you actually mean some setup menu for the onboard firmware, which is a few Megabytes more than just the BIOS).Ī software can in no way fingerprint my computer. I use the FPGA that is programmed as a network controller.Īwesome! Just as if you had a cheap network card! Or used your onboard NIC with a custom MAC address. Ok, so now you've disabled some software setting that says the NIC is enabled. I turn off the motherboard's network interface controller in BIOS. But any modern (think: the last 20 years 'modern') network card also allows you to freely configure the MAC address it uses, so I think you might be overshooting a bit here with your FPGA. A MAC address of a computer can be spoofed by an FPGA which can be programmed as a network controller.