We report test beam results on the overall system performance of two modules of the L3 Silicon Microvertex Detector exposed to a 50 GeV pion beam . Each module consists of two AC coupled double-sided silicon strip detectors equipped with VLSI readout electronics . The associated data acquisition system comprises an 8 bit FADC, an optical data transmission circuit, a specialized data reduction processor and a synchronization module . A spatial resolution of 7.5 wm and 14 [Lm for the two coordinates and a detection efficiency in excess of 99% are measured . 522