JEE Main

You should go to the college you want to take admission and enquire regarding this because it differs for every college. And every college has their own policies regarding the special quota admission.

484849 in JEE Main is quite a low rank. However you have not mentioned any other details like your category, the home state you belong to as the cutoffs also depend on them. Now if we go through the cutoffs of various NITs, if you belong to general category, then getting CSE might be difficult. Apart from CSE, you can expect Civil, Mechanical, Electrical and Electronics Engineering in NITs such as Uttarakhand, Jalandhar, Jaipur, Patna, Andhra Pradesh, Durgapur etc. Under All India quota. You may get CSE in North East NITs or NIT Srinagar, Hamirpur etc. As the cutoffs are low.

I give you closing rank of last year in 2021 in CSAB 2nd round in some of the colleges. NITs
NIT Rourkela-
Life Sciences-
98148 (gen)/ 124067 (obc)
NIT Agartala
Production -
93695 (gen)/ 128982 (obc)
Biotech- 104838 (gen)
Physics -
80074 (gen)/ 117018 (obc)
Chemistry- 122254 (gen)
NIT Srinagar-
Chemical-
83598 (gen)/ 116302 (obc)
Civil-
94197 (gen)/ 132546 (obc)
Metallurgy-
125194 (gen)/ 142110 (obc)
NIT Andhra-
Biotech-
75580 (gen)/ 94757 (obc). .

YES YOU CAN EASILY GET CSE IN LNMIIT AT THIS SCORE if you are belong to female category. The expected cutoffs are as follows
CSE : ABOVE 97 PERCENTILE
CCE : 96 to 97 PERCENTILE
ECE : 95 to 96 PERCENTILE
ME : 93 to 94 PERCENTILE.

For getting Computer Science Engineering in any NIT your percentile should be at least above 96 of you are a OBC Candidate so that you can get admission in low NIT's like NIT Nagaland, NIT Srinagar and this solution.

With this Rank you not only get GFTIs, but you can also get IIITs. If you apply for CSAB Special Rounds after JoSAA Rounds. then you have very high chances of getting CSE or IT Branch in moderate IIITs.

Considering your rank as well as category, you can get a decent branch in lower NITs or lower branch in Moderate NITs and only in JoSAA Round 5 or Round 6. If you want slightly better NITs with a decent branch then you should register for CSAB Counselling. Please refer list of NITs according to NIRF Ranking and search out for a decent NIT for your CSAB Rounds. Good Luck for your Counselling!