What this means
The IEEE assigned the MA-L block A4978A to LEAR. 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 A4:97:8A, it is LEAR hardware.
Frequently Asked Questions
Who owns MAC prefix A4978A?
A4978A is registered to LEAR in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. LEAR's block covers 16,777,216 addresses.
What devices use A4978A?
Any network device with a MAC address starting A4:97:8A was manufactured by or for LEAR.