Abstract: A computer card data receiver (10) includes a housing (14) having a top planar surface (16) and a bottom planar surface (18) and a thin profile suited to fit within a recessed data interface port (32) of an external computer (30). An antenna (12) is coupled to the top planar surface (16) of the housing (14) for intercepting transmitted selective call address signals and data associated therewith. The antenna (12) is rotatable between a first antenna position (12A) and a second antenna position (12B), the first antenna position (12A) being selected when the housing (14) is removed from the recessed data interface port (32), and the second antenna position (12B) being selected when the housing (14) is inserted into the recessed data interface port (32). A receiver (40) is enclosed within the housing (14) and receives and detects the intercepted selective call address signals and data associated therewith.