An electronic equipment (10, 10A-E) comprising a case (600, 600E) and a connector (100, 100A-E) which is attached to the case (600, 600E), wherein: the case (600, 600E) has a main portion (610, 610E); the main portion (610, 610E) has a top surface and a back surface (614, 614E) in a first direction; the main portion (610, 610E) has an opening; the opening pierces the main portion (610, 610E) in the first direction; the connector (100, 100A-E) comprises a housing and a waterproofing member (300, 300A-E); the housing has a bottom portion and a side portion; the bottom portion is positioned away from the back surface (614, 614E) of the main portion (610, 610E) in the first direction; the side portion extends from the bottom portion toward the back surface (614, 614E) of the main portion (610, 610E) in the first direction; the waterproofing member (300, 300A-E) has an elastic property and is attached to the housing; the waterproofing member (300, 300A-E) is sandwiched by the bottom portion and the back surface (614, 614E) of the main portion (610, 610E) in the first direction; the waterproofing member (300, 300A-E) has at least one first contact portion (310, 310A-C), at least one second contact portion (320, 320A-C, 320E), at least one third contact portion (330, 330A-C) and at least one fourth contact portion (340, 340C, 340D); the first contact portion (310, 310A-C) is pressed against and in contact with the bottom portion in the first direction by the elasticity of the waterproofing member (300, 300A-E); the second contact portion (320, 320A-C, 320E) is pressed against and in contact with the back surface (614, 614E) of the main portion (610, 610E) in the first direction by the elasticity of the waterproofing member (300, 300A-E) the third contact portion (330, 330A-C) is in contact with the side portion in a second direction perpendicular to the first direction; the third contact portion (330, 330A-C) is pressed against the side portion in the second direction by the elasticity of the waterproofing member (300, 300A-E) upon the mating of the connector (100, 100A-E) with the mating connector; and the fourth contact portion (340, 340C, 340D) protrudes inward in the second direction beyond the opening, characterized in that the connector (100, 100A-E) is mateable along the first direction with a mating connector which is inserted through the opening; and in that the waterproofing member (300, 300A-E) is sandwiched by the mating connector and the side portion in the second direction when the connector (100, 100A-E) is mated with the mating connector; and the fourth contact portion (340, 340C, 340D) is pressed against and in contact with the mating connector in the second direction by the elasticity of the waterproofing member (300, 300A-E) upon the mating of the connector (100, 100A-E) with the mating connector. the case (600, 600E) has a main portion (610, 610E); the main portion (610, 610E) has a top surface and a back surface (614, 614E) in a first direction; the main portion (610, 610E) has an opening; the opening pierces the main portion (610, 610E) in the first direction; the connector (100, 100A-E) comprises a housing and a waterproofing member (300, 300A-E); the housing has a bottom portion and a side portion; the bottom portion is positioned away from the back surface (614, 614E) of the main portion (610, 610E) in the first direction; the side portion extends from the bottom portion toward the back surface (614, 614E) of the main portion (610, 610E) in the first direction; the waterproofing member (300, 300A-E) has an elastic property and is attached to the housing; the waterproofing member (300, 300A-E) is sandwiched by the bottom portion and the back surface (614, 614E) of the main portion (610, 610E) in the first direction; the waterproofing member (300, 300A-E) has at least one first contact portion (310, 310A-C), at least one second contact portion (320, 320A-C, 320E), at least one third contact portion (330, 330A-C) and at least one fourth contact portion (340, 340C, 340D); the first contact portion (310, 310A-C) is pressed against and in contact with the bottom portion in the first direction by the elasticity of the waterproofing member (300, 300A-E); the second contact portion (320, 320A-C, 320E) is pressed against and in contact with the back surface (614, 614E) of the main portion (610, 610E) in the first direction by the elasticity of the waterproofing member (300, 300A-E) the third contact portion (330, 330A-C) is in contact with the side portion in a second direction perpendicular to the first direction; the third contact portion (330, 330A-C) is pressed against the side portion in the second direction by the elasticity of the waterproofing member (300, 300A-E) upon the mating of the connector (100, 100A-E) with the mating connector; and the fourth contact portion (340, 340C, 340D) protrudes inward in the second direction beyond the opening, characterized in that the connector (100, 100A-E) is mateable along the first direction with a mating connector which is inserted through the opening; and in that the waterproofing member (300, 300A-E) is sandwiched by the mating connector and the side portion in the second direction when the connector (100, 100A-E) is mated with the mating connector; and the fourth contact portion (340, 340C, 340D) is pressed against and in contact with the mating connector in the second direction by the elasticity of the waterproofing member (300, 300A-E) upon the mating of the connector (100, 100A-E) with the mating connector.