Did you install libprs500 and the libprs500 device driver on the same machine you installed Connect? I did that and eventually, Connect stopped seeing my reader. All it took was to use libprs500 to talk to the reader and I borked my reader's USB connection to my computer. It worked fine on my wife's computer so I knew my reader was not broken. I removed the USB driver installs from libprs500 and rebooted and Connect worked fine after that with my reader.
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