info mikrotik sxt lte cat 6

good evening, I open this post, to ask for information on the mikrotik sxt cat 6, to know if someone has it and can give me information on it, because I would be tempted to upgrade to this model (currently I have a 0sxt cat 4 ) to be able to aggregate the bands, but I have some doubts, as on the official website mikrotik, it talks about the gigabit ethernet port, but then about the 100mb poe injector, and how does it go up to 300mb if it is then choked at the bottom?
other doubt, bandwidth aggregations work well?
because I read on some forums, that because of the 100 mb poe injector, everything is choked and the speeds do not change, and that the aggregations do not work well, in addition to how I read in the various forums, there seems to be an optional poe from 1000 mb
if someone is so gentle as to help me capie, in order to avoid spending money and then not get paid
thank you all and good evening

Currently you can buy R11e-LTE6 or Quectel EP06-E .
SXTR have limitation to 200Mbps, you can aggregate 2x100Mb .

For newer lte category the better will be change your routerboard with 1Gb Ethernet port like RBM11G, wAPR ac etc.