![]() ![]() So the simple answer is: the COM port PS/2 to USB converter cannot provide the necessary communication speed nor proper USB protocol for a FS/HS memory stick. This "setup" will not work because the setup can operate only at 1.5Mbit/s USB 1.0 rate, while the FS USB device needs serious processing of data signals at 12 Mbit/s, and needs a carefully scheduled special service from PC host, which cannot be provided by COM port. However, the picture shows a USB stick, which can operate only at FS rates (12Mbits/s) and above. ![]() Technically the stack-up should work with a special USB/PS/2 compatible mouse, which operates in LS USB mode (1.5Mbit/s). I believe the picture shows a general RS-232 full-size DB25 COM port, and not a parallel port. ![]()
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