I am the original owner. The memory stick were removed from a working printed and carefully stored. The stick has NOT been tested, but I have no reason to believe that that they are not fully functional.
This stick may be compatible with the following printers:
Lexmark 4029 5e, 4029 6, 4029 6a, 4029 6p, 4029 10, 4029 10a, 4029 10l, 4029 10p, 4037 5e, 4037 6 Printer, 4037 6A, 4037 10 Printer, 4037 10A, 4037 10L, 4037 10P, LaserPrinter 6P, LaserPrinter 10 (4029-030), LaserPrinter 10A (4029-041), LaserPrinter 10L (4029-040), LaserPrinter 10P, LaserPrinter 4037 5E, LaserPrinter 5E (4029-010), LaserPrinter 6 (4029-020), LaserPrinter 6A (4029-021), LaserPrinter 4029, Optra E Optra E+, Optra E+ Mac-Ready, Optra ES Printer, ValueWriter 300, ValueWriter 600, WinWriter 200, WinWriter 400, WinWriter 600.