Cable header connector

A cable header connector comprising:

• a cable including a pair of signal wires;
• a contact sub-assembly terminated to the cable, the contact sub-assembly having a mounting block having contact channels therein, the contact sub-assembly having a pair of signal contacts each received in corresponding contact channels and held in the contact channels by an interference fit, the signal contacts having terminating ends, the contact channels receiving corresponding signal wires of the cable and positioning the signal wires in position adjacent to the terminating ends of the corresponding signal contacts, the signal contacts being laser welded to the signal wires of the cable at the terminating ends of the signal contacts after being positioned in the contact channels;
• and
• a ground shield providing electrical shielding for the contact sub-assembly, the ground shield extending along the pair of signal contacts to provide peripheral shielding for the pair of signal contacts along a length of the signal contacts, the ground shield is box-shaped along the mounting block to entirely surround all sides of the mounting block, the ground shield entirely peripherally surrounding the terminating ends and the portions of the signal wires terminated to the terminating ends in the mounting block.