for use with Windows 10 64Bit i have test a lot of TTL changer.

Nothing work PL2303, CH340 :-(
I have test a lot if chips (Fake and normal).

Only the FT232 Chip work perfectly - see attached picture (you can copy with this info in avrtx.cn and other foren).

In germany, i have buy the FT232 from www.reichelt.de
DEBO USB2UART 3 Entwicklerboards - USB Typ-A auf UART, FT232

The rest software works with copy DLL, OCX to Windows 32 or 64 System - so Windows 7 ...
All ok :-)

i hope, when you can write this Info down, a lot of people are help.

Because the cable, i have buy a Mini B USB to connector - see picture. So very nice to Jump:-)
Best regard from Germany

Mit freundlichen Gršč?en
Marco Dittmann

73 DL9AM @ DB 0 OHA und DB 0 YZ