A fixed connector comprising: a body configured to be fixedly inserted into a substrate; a signal pin having a first signal pin inserted into the body and a second signal pin electrically connected to and extending from the first signal pin to be disposed on the substrate; and a dielectric coupling the signal pin and the body, wherein a portion of the signal pin has an L shape to be in contact with the substrate, and said portion of the signal pin is exposed to an outside of the body, and wherein the body includes: a body part surrounding the first signal pin; and a plurality of leads integrally formed with the body part, connected to a lower portion of the body part, and configured to be inserted into the substrate, wherein the body part is symmetrical with respect to a vertical cross section having the first signal pin as a central axis and oriented along the second signal pin, the body part has a plurality of grooves (H1, H2) between the plurality of leads, characterized in that the plurality of leads are each formed in a bar shape at an edge of a bottom surface of the body part and are asymmetric in the left-right direction, and among the plurality of grooves (H1, H2), a groove through which the second signal pin passes has a greater width or height than that of the remaining grooves. a body configured to be fixedly inserted into a substrate; a signal pin having a first signal pin inserted into the body and a second signal pin electrically connected to and extending from the first signal pin to be disposed on the substrate; and a dielectric coupling the signal pin and the body, wherein a portion of the signal pin has an L shape to be in contact with the substrate, and said portion of the signal pin is exposed to an outside of the body, and wherein the body includes: a body part surrounding the first signal pin; and a plurality of leads integrally formed with the body part, connected to a lower portion of the body part, and configured to be inserted into the substrate, wherein the body part is symmetrical with respect to a vertical cross section having the first signal pin as a central axis and oriented along the second signal pin, the body part has a plurality of grooves (H1, H2) between the plurality of leads, characterized in that the plurality of leads are each formed in a bar shape at an edge of a bottom surface of the body part and are asymmetric in the left-right direction, and among the plurality of grooves (H1, H2), a groove through which the second signal pin passes has a greater width or height than that of the remaining grooves. a body part surrounding the first signal pin; and a plurality of leads integrally formed with the body part, connected to a lower portion of the body part, and configured to be inserted into the substrate, wherein the body part is symmetrical with respect to a vertical cross section having the first signal pin as a central axis and oriented along the second signal pin, the body part has a plurality of grooves (H1, H2) between the plurality of leads, characterized in that the plurality of leads are each formed in a bar shape at an edge of a bottom surface of the body part and are asymmetric in the left-right direction, and among the plurality of grooves (H1, H2), a groove through which the second signal pin passes has a greater width or height than that of the remaining grooves.