Obtain the UPA USB v1.3 software bundle. Ensure it contains the older FTDI driver (version 2.12.28 or 2.10.00).
While newer versions like V1.3.0.14 or even V3.5 exist, the V1.3 release remains popular due to its stability on older Windows systems and its robust support for: Expanded Memory: upa usb v1 3 software download