Does RPM support USB printers?
Does RPM support printing to a USB connected printer?
USB printing is supported as RPM does not make any distinction between USB, parallel, and serial connected printers.
Note: Some manufacturers create print drivers that do not support remote or network printing. These are typically low-end, low-cost printers and the print driver will work only when in constant communication with the printer. If this is the case, try changing the Spool settings and other Advanced features to disable bi-directional support and advanced printing capabilities.