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I am not able to locate the Prolific USB to Serial COMM ports on the Device Manager after installation.
Please advise correct UEFI Compatibility Support mode settings to enable Asus Z87I-PRO motherboard to boot with this card installed. At present the PC doesn't get past POST before restarting.
I have purchased the serial card, I installed it and installed the drivers, but I cannot find anywhere how to change the mode to RS485. I need to use this board for ModBus Communication, and it will only work with RS485. I have used Pins 1,2 and 5 where 1 is Data -, 2 is Data +, and 5 is GND. I connect it to the modbus cards but I get no Communication.

please help.
Was running on a ASUS & Windowns7
Now on an ACER-TravelMaoeIP and after successfull Driver installation v1.9.9.0 I got "unit can not start (Code 10)"
We are having trouble getting the system to recognize the parallel port for a securtiy lock. our device id is: PCI\VEN_1FD4&DEV_1999&SUBSYS_01011FD4&REV_00. Ihave attached the screen shot of the error we are getting. Dell believes we need to reinstall the driver, but i am unsure of which driver to download and the actual process required to maintain system integrity. Any help is greatly appreciated.