Para verificar os bytes, use o cmdlet Format-Hex.
PS > $bytes = [Byte[]] (0x55,0x55,0xaa,0xaa,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x50)
PS > $bytes | Format-Hex
Path:
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00000000 55 55 AA AA 00 00 00 00 00 00 00 50 UUªª.......P