Getting a to work on a modern 64-bit Windows 10 system can be a challenge because Gigaware was an old RadioShack house brand . Since the brand no longer officially exists, finding official drivers is difficult, and newer Windows updates often break compatibility with the older Prolific PL2303 chips found in these cables. Why Your Driver Isn't Working

If these versions are available in the list, selecting them often resolves compatibility issues for older Gigaware hardware. PICAXE Forum Verifying the Chipset