ZTE MF833V 4G LTE Mobile USB Modem Dongle

i needed a 4g lte usb modem that functioned properly with costa rica's telecom providers especially with colby which is the biggest and with the best coverage provider in the country it works perfectly and this is the best modem i found during my research that complies practically with all the different frequency specifications for lte 4g 3g and gsm 2g not only for colby but for also other providers like claro also the modem works perfectly fine doing the usb tethering of the internet when i connected to ngl i net glar 750 travel ac router which has a open wrt based system installed i purchased one zte 833 around six months ago working like charm no problems i have used it directly plugged in hp windows 10 based laptop as well as plugged in hp dock hp dock is separate accessory which provides more oddband serial ports once driver are loaded it's plug and play i recently purchased modifi