Instruct: Classify a given Amazon review as either positive or negative.
Query: BEWARE!!!!!!!!!

Be careful before considering buying this unit! The description does not tell you that it is not compatible with many PCs because it requires a so-called "fully powered USB port" even if this is not specified in the description on the Amazon site.I ordered one in May, it did not work on my hardware (even though I tried on several PCs that were supposed to have fully powered ports, even tried on powered USB hubs) and since then I am struggling to get it fixed or refunded: Amazon tells me to contact Optics Planet, Optics Planet tells me to contact Meade, and Meade is simply unreachable.So if you are willing to waste 700$, go ahead!!