What this means
The IEEE assigned the MA-M block 10DCB62 to CAL-COMP INDUSTRIA E COMERCIO DE ELETRONICOS E INFORMATICA LTDA. 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 10:DC:B6:2, it is CAL-COMP INDUSTRIA E COMERCIO DE ELETRONICOS E INFORMATICA LTDA hardware.