What this means
The IEEE assigned the MA-L block E0E1A9 to Shenzhen Four Seas Global Link Network Technology 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 E0:E1:A9, it is Shenzhen Four Seas Global Link Network Technology Co., Ltd. hardware.