300x 可支援的種類:
(來自 http://h10010.www1.hp.com/wwpc/us/en/sm/WF06a/18972-236253-64302-34214-64302-27316.html 請注意後面的「例外狀況」)
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Virtually any HP or non-HP printer with a parallel port (except PPA or GDI printers, and HP Deskjet 710C, 712C, 720C, 722C, 820Cxi, 820Cse, 1000C, 1000CXI, 1000CSE printers, HP Original Photosmart printer (C3804A), "Host-based" or "Windows only" printers, HP LaserJet 3100 products, and HP Officejet PSC 500); Supports HP Officejet G series (full scanning and faxing), HP LaserJet 3150 (full scanning and faxing), HP LaserJet 1100A series (full scanning), HP Officejet Pro series and R series (basic scanning only), HP LaserJet printers, HP Deskjet printers, HP Designjet printers, HP 2000 and 2500 series printers, HP Business Inkjet 2200/2250 series, and HP Photosmart 1218 series
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這裡有一段問題描述很接近您的狀況, 可參考解決方案:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?locale=en_US&taskId=110&prodSeriesId=27316&prodTypeId=18972&objectID=bpj01194
還有些其他的狀況也可以參考:
http://h20000.www2.hp.com/bizsupport/TechSupport/SupportTaskIndex.jsp?locale=en_US&taskId=110&prodSeriesId=27316&prodTypeId=18972&supportTaskId=2935

不然, 就要找:
http://h20000.www2.hp.com/bizsupport/TechSupport/Resource.jsp?locale=en_US&taskId=110&prodSeriesId=27316&prodTypeId=18972