ones described above it will be noted that at the rear end of this card the tab and recess 448 are positioned between the i o connectors and the rear side of the card referring to fig2 29 it will be seen that the full metal corners of the embodiments described above are comprised of a folded metal wall shown generally at 549 referring to fig3 31 it we be noted that this curved corner may be produced from a blank having a medial protrusion 450 and lateral protrusions 451 and 452 which may be folded upwardly and inwardly in segments to produce the desired rounded effect those skilled in the art will appreciate the advantages of the construction of this full metal corner in terms of emi esd shielding or similar full metal shielding without use of plastic or open air this feature is also aesthetically advantageous since it has no sharp edges the following modifications may also be incorporated into the card described above a incorporating a frame bar in addition to the metal card shields to support the interior electronic circuitry and b affording a means to mechanically connect and fix the metal card shields to the pcb in this additional embodiment means are provided to appropriately align the two end connectors i o and the mtb connector with respect to the pcb before their fixation by a solder reflow process preferably this alignment should be achieved without the need of tight connector peg to board hole clearances removing this.