What this means
The IEEE assigned the MA-M block F490CBB to A-dec Inc.. 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 F4:90:CB:B, it is A-dec Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix F490CBB?
F490CBB is registered to A-dec Inc. 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. A-dec Inc.'s block covers 1,048,576 addresses.
What devices use F490CBB?
Any network device with a MAC address starting F4:90:CB:B was manufactured by or for A-dec Inc..