MitraStar

MitraStar Technology Corp.
 Manuf. tagged devices
 * FCC ID: ZMY
 * OEM ZyXEL.. MitraStar (prev. part of ZyXEL)

If there is a numeric P/N, it will frequently start with 45-402- and 45-601-

Examples
"45-601-000573" is silkscreened on the board in the FCC photos
 * ZyXEL NBG6816 (ARMOR Z1)
 * OUI: 0C:4C:39 (MitraStar Technology Corp.) FCC label