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LM2841: What is the differece between LM2841XMK-ADJL/NOPB and LM2841XQMK/NOPB?

Part Number: LM2841

Dear support

What is the differece between  LM2841XMK-ADJL/NOPB and   LM2841XQMK/NOPB?

I find the marking is different. 

What other difference, except the marking.