Multi-port Serial Card Selection Guide  Model Bus COM-Selector RS-232 Ports RS-422/485 Self-Tuner ESD Protection Max. Speed (bps) FIFO Size (bytes) Connector Dimensions (mm) Ports Isolation VXC-112A PCI Yes 2 - - - +/-4 kV 115.2 K 16 Male DB-9 130 x 105 VXC-112U Universal PCI Yes 2 - - - +/-4 kV 115.2 K 128 Male DB-9 120 x105 VXC-114U Universal PCI Yes 4 - - - +/-4 kV 115.2 K 128 Female DB-37 130 x 105 VXC-142 PCI Yes - 2 - Yes +/-4 kV 115.2 K 16 Male DB-9 130 x 105 VXC-142i PCI Yes - 2 3 kV Yes +/-4 kV 115.2 K 16 Male DB-9 140 x 95 VXC-142U Universal PCI Yes - 2 - Yes +/-4 kV 115.2 K 128 Male DB-9 120 x105 VXC-142iU Universal PCI Yes - 2 3 kV Yes +/-4 kV 115.2 K 128 Male DB-9 120 x105 VXC-144U Universal PCI Yes - 4 - Yes +/-4 kV 115.2 K 128 Female DB-37 130 x 105 VXC-144iU Universal PCI Yes - 4 3 kV Yes +/-4 kV 115.2 K 128 Female DB-37 130 x 105 VXC-182i PCI Yes 1 1 3 kV Yes +/-4 kV 115.2 K 16 Male DB-9 140 x 95 VXC-182iU Universal PCI Yes 1 1 3 kV Yes +/-4 kV 115.2 K 128 Male DB-9 120 x105
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