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Title: Not bi-directional is an issue
Review: Although setup wasn't difficult if you know what you're doing, instructions were ambiguous at best. Once set up, the bi-directional communication required by some printers (like my Canon BJC-2100 and i950) is not available; this produces error messages to the originating pc for each print job sent ("printer not responding" in the case of the Canons, although the print job had already started), and caused more serious problems when the printers stopped printing to communicate a low ink condition. In addition, sending jobs from a second PC while the first is printing causes a crash of the original job. Email to the manufacturer requesting assistance was ignored.
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