Ergotech Erw300n Driver

If you cannot find the specific file, download the "Prolific PL2303" or "MCS7810/7840/7850" universal driver. Many ERW300N revisions use the MCS7840 chipset.

Because it uses a specialized chipset (often a variant of the Oxford or MCS series, depending on the revision), Windows does not natively recognize it. This is why the is mandatory. ergotech erw300n driver