@Chresto Hi, have you checked whether the modem is on the compatible list of the MR3420 V5: https://www.tp-link.com/support/3g-comp-list.html?model=TL-MR3420&hdVer=V5 Thank you.

@GioGi Hi, since the TL-MR6500v is a specialized model for the internet service provider and the firmware is also customized, If possible, please have a check with the ISP support directly for...

@kupang Hi, thank you very much for your feedback. The official firmware of V4 and V5 has not added the manual-band selection feature yet. If you need the manual band selection, please refer to the...

@Waran Hi, yes, It has 2 *Detachable External 4G LTE Antennas. Please note: we could not 100% guarantee the performance with the external antennas; And it is suggested to change both of them when you...

@Whatdoyouwant Hi, Could you please close the current page and delete the browser history and access the link again? --if possible, please try to test on a different device to have a look; By the...

@Chicken2 Hi, please refer to this picture to have a look: