@karnali9, your own post of Q/A on Syrian TPS justifies neerma's statement that you can apply for EAD without affecting H1b as long as you don't use that EAD. On that Q/A, the USCIS says "The fact that an H-1B nonimmigrant is granted this type of an EAD does not cause the alien to violate his or her nonimmigrant status, if he or she continues to act in accordance with the requirements of his or her approved H-1B nonimmigrant petition".