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Solve : UPS connect with USB adapter?

Answer»

I've bought a ( Powercom - Black Knight ) UPS for my PC

The problem is : the UPS uses RS-232 port as communication port and the motherboard (Gigabyte 78-LMT) does not have RS-232 port

So I bought an USB-to-Serial adapter

I managed to download a working driver for it ( Vista Driver ) and it shows in Device manager under Ports (COM&LPT)
Prolific USB-to-Serial Comm Port (COM3) and the properties shows" This Device is working probably "

Then Installed UPSMON software to monitor the UPS and there is an option to choose the Comm Port or Auto Search , it keeps searching and stops after a while with no result

I have windows 8 x64 

so please if you know what is the problem and how to solve it , that would be appreciated

ThanksShort answer. You are wasting  your time.
Long answer. Get a RS232 on a PCI card. A physical RS-232 port has some hardware features the are not well replicated on a USB  adapter. The USB adapter problematic at best.
My commendation is get a serial port on a PCI card.
Brand NAMES sell for about $38 and is a small price  to pay for something that is very important.
Try NewEgg or you favorite on-line  company. Never found  in local outlets.
http://www.newegg.com/Product/Product.aspx?Item=N82E16815150216

BTW: I think that model UPS excepts to find a 16550 UART.
Quote

The 16550 UART (universal asynchronous receiver/transmitter) is an integrated circuit designed for implementing the interface for serial COMMUNICATIONS. It is frequently used to implement the serial port for IBM PC compatible personal computers, where it is often connected to an RS-232 interface for modems, serial mice, printers, and similar peripherals.
...
http://en.wikipedia.org/wiki/16550_UARTThanks for reply

So it is a dead end !

I'll try to find one but I was hoping that for example : configuring port settings at specific values or something like that , would solve the issue Some USB RS 232 adapters have the bright software to map it to a virtual port. But the authority of the ones I tried don not do it well. They will instead define a seial port that does not exist.  So the older software does not know how to  find a port that was never defined as a valid derail port. Or to say bit another way, the USB adapters are not truly have  backward compatibility. They mostly don not work with old software that only knows about the four ports that were defined earlier.
Specifically, COM1, COM2, COM3 and COM4 were earlier defined.

Quote
USB Serial Ports Driver
(COM5) - drivers for windows 7
...trying to manually configure your drivers by utilizing the Windows device manager may disable your device, or cause your computer to malfunction.... d..commercial software may be the optimal solution in case you are not 100% sure you know what you're doing and how to backup your PC in case of a crash or conflict.
SEE what I mean? 
Save time by using an old-fashioned method. A read serial port. Windows 7 will find it automatically and never forget it and NOBODY can jerk it out of the PC.
Thanks V.much for reply and advice

I will save my time and effort cause it just a software to monitor the load and battery level of the UPS


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