2.5mm.

Gateway: MA2A, M210, M250GS, M250G, M250ES, M250E, M250A, M250B, M360, M360A, M360B, M360C, M460, M460A, M460B, M465QS, M465G, M465E, M520, NX100X, NX200S, NX200X, NX250X, NX500S, NX500S w/S-Video, NX500X, NX500X w/S-Video, NX510S, NX550X, NX550XL, NX560X, NX560XL, S-7200N, S-7500N, S-7510N, S-7700N, S-7710NGateway 3000 Series: 3018GZ, 3040GZ, 3520GZ, 3522GZ, 3525GB, 3545GZ, 3550GH, 3550GZ, 3610GZ, MX3042, MX3044, MX3044h, MX3210, MX3212, MX3215, MX3225, MX3228, MX3228h, MX3230, MX3231, MX3311b, MX3410, MX3410h, MX3412, MX3412h, MX3414, MX3416, MX3417, MX3422, MX3558, MX3558h, MX3560, MX3560h, MX3562, MX3563, MX3563h, MX3610, MX3701, MX3702Gateway 6000 Series: 6010GZ, 6018GH, 6018GZ, 6020GZ, 6021GZ, 6022GZ, 6023GP, 6510GZ, 6518GZ, 6520GZ, 6525GP, 6531GZ, MX6025, MX6025h, MX6027, MX6027h, MX6028, MX6030, MX6121, MX6123, MX6124, MX6124h, MX6128, MX6131, MX6135, MX6214, MX6216, MX6420, MX6421, MX6422, MX6423, MX6424, MX6424h, MX6425, MX6426, MX6427, MX6428, MX6429, MX6430, MX6431, MX6433, MX6436, MX6437, MX6438, MX6439, MX6440, MX6440h, MX6441, MX6442, MX6444, MX6444h, MX6445, MX6446, MX6447, MX6448, MX6450, MX6452, MX6453, MX6454, MX6455, MX6625, MX6627, MX6627h, MX6629, MX6629h, MX6631, MX6633, MX6633h, MX6640b, MX6641 MX6641h, MX6650, MX6650h, MX6708, MX6708h, MX6710, MX6750, MX6750h, MX6912, MX6919, MX6920, MX6920h, MX6927, MX6930, MX6930h, MX6931, MX6951, MX6951h, MX6955, MX6956, MX6957, MX6958, MX6959, MX6960, MX6961, MX6961h