What is a fully unlocked 1 x ROM 11 ROM11 ROM10 CARD? What can you do next to 1?

What is a fully unlocked 1 x ROM 11 ROM11 ROM10 CARD? What can you do next to 1?

ROM stands for Read solitary Memory.

means no notes is written to the ROM chip/card without the harware/software that designed the ROM.

i u said where on earth u seen this occupancy or read it from that would helped things.
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