Look up FTDI at Ebay and the whole page will be populated with USB to serial dongles that more than likely have a counterfeit FTDI DIP.
THese are exemplified by a red PCB and voltage selector.
The ID is screen printed, while using FT_Prog to invert the RxD and TxD it appears to accept the changes, however the inversion is not made, the FW cannot be updated through the dongle. I began to take a closer look. Not laser etched, Pin#1 marker is very shallow.
Ebay item #261743801