This 10Mhz quartz resonator is used together with the Nanocom programmer for updating the firmware on Nanocom One units. If a 16mhz quartz is present on the unit the updates will not work until its changed to a 10mhz one. The 16mhz crystal is only found in the COM port version of the Nanocom One but please do a visual check as this may have been changed prior to original sale.

