Abstract: Disclosed is an electrical connector comprising: at least one flexible electrically connecting element having a plurality of terminals at each end thereof; a first insulation element and a second insulation element configured to position said terminals for electrically connecting with a socket located on a printed circuit board, wherein said first insulation element has a first sidewall and said second insulation element has a second sidewall; and a supporting element having at least one sidewall, configured to engage with said first insulation element and second insulation element. Wherein a displacement space is defined between said at least one sidewall of said supporting element and at least one of said first sidewall and second sidewall to allow said first and second insulation elements to move relative to said supporting element. This present invention also provides an electrical connector assembly.