An electrical connector for electrically connecting a CPU with a plurality of conductive pads and a PCB comprises an insulative housing and a number of terminals received in the housing. Each terminal includes a base, an elastic arm extending from the base and a solder section connected with the PCB. A contact section near the elastic arm protrudes a contact portion to meet the pads of the CPU and to increase the contact friction and remove the oxidation layer and any contaminant of the pads.