What this means
The IEEE assigned the MA-L block 7C3E82 to Bouffalo Lab (Nanjing) 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 7C:3E:82, it is Bouffalo Lab (Nanjing) Co., Ltd. hardware.