Connectivity technology USB. £19.99 £ 19. Dell Inspiron Series: 3420 3421 3431 3441 3442 3443 3520 3521 3531 3537 3541 3542 3543 5425 5442 5443 5445 5447 5448 5457 5521 5542 5547 5748 5749 7447 7501 7506 2-in-1 7537 7547 7548 7737 7791 2-in-1; Inspiron 14: 14R 14Z1410 1420 1425 1427 1428 1440 14641470 5423 5421 5437 M4010 N4010 N4020 N4030 N4050 N4110 N4120; Inspiron 17: 17R 1720 1721 1750 1764 N7010 5720 5721 5737 N7110 13N3010 13z5323 3721 3737 600m6400 8500 9300 E1405 E1505 M431R M5040 M531R-5535 M731R.
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