My current ILEC "offers" 100 Mbit DSL, but you have to be within a certain distance of their main infrastructure (I forget what it's called. DMARC, maybe?)
This means it offers 100 Mbit service, but at my house it actually maxes out at 8 Mbit.
This means it offers 100 Mbit service, but at my house it actually maxes out at 8 Mbit.
That's probably the device you're looking for.