LAPLINK„ Y-Y Serial File Transfer Cable PC users utilising LAPLINK„ utilities software can use the €™Y-Y€™ shielded serial file transfer cable to make the physical link between PCs. This Y-Y serial file transfer cable has 2 x DB25 female D connectors and 2 x DB9 female D connectors, this configuration allows file transfer via the 25-way D parallel port of a PC.