A spring finger of an electrical connector is disclosed. The spring finger includes a soldering section, a support section extending substantially perpendicularly from an end of the soldering section, a U-shaped first bend extending from an end of the support section opposite the soldering section and forming a first opening facing the soldering section, and a U-shaped contact structure obliquely suspended from an end of the first bend and spaced apart from the support section. The contact structure contacts a mating conductive terminal of a mating connector in a lateral direction parallel to the soldering section.