What this means

The IEEE assigned the MA-L block 94DF4E to Wistron InfoComm(Kunshan)Co.,Ltd.. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting 94:DF:4E, it is Wistron InfoComm(Kunshan)Co.,Ltd. hardware.