The serial cable may be a null-modem crossover type. Fix: Try a straight-through RS-232 cable. Also, check that no other software (e.g., HyperTerminal) has locked the COM port.
), the safest place to download drivers is from the official manufacturer or authorized distributor sites: HPRT Official Site: Look for the MPT2 Product Page Mpt-ii Driver Download
If you’ve lost the disc, reputable tech sites often host the "POS 58mm Thermal Printer Driver," which is universally compatible with the MPT-II. How to Install the MPT-II Driver on Windows The serial cable may be a null-modem crossover type
: Run the setup executable (typically named MPT PrinterDriver-v-x.x.x.exe ) as an administrator. check that no other software (e.g.