What this means
The IEEE assigned the MA-M block 78CA832 to APC. 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 78:CA:83:2, it is APC hardware.
Frequently Asked Questions
Who owns MAC prefix 78CA832?
78CA832 is registered to APC in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. APC's block covers 1,048,576 addresses.
What devices use 78CA832?
Any network device with a MAC address starting 78:CA:83:2 was manufactured by or for APC.