compliant foot 95 makes contact with the circuit board 90 the number of retaining contacts 85 is equal to the number of die pads 77 on the bare die 76 therefore for the bare die of fig2 there would be eight retaining contacts 85 in a die chamber 55 fig5 is a top view of a single die chamber 55 in addition to elements previously named a pair of opposed parallel walls 101 is shown in fig5 preferably the chamber portion 50 shown in fig1 is oriented during bare die insertion such that the chambers 55 are stacked this orientation allows for a simplified insertion process which can best be understood with reference to fig3 4 5 6 and 7 a bare die 76 is placed on an insertion tool 105 shown three dimensionally in fig6 and cross sectionally in fig7 with the circuit side of the bare die 76 up thereby preventing damage to the circuitry of the bare die 76 the insertion tool 105 is then inserted into the chamber void 65 between the two retaining edges 60 the guide edge 110 of the insertion tool 105 is used to mechanically force the bare die 76 into the retaining contact 85 see fig4 the bare die 76 is.