A method for detecting a specific sequence, a mutation andor a polymorphisms, including a single nucleotide polymorphism, is based on the use of RecA-like recombinase protein and primer extension or oligonucleotide ligation assays. HMU is configurable to asynchronously retrieve host processor commands from circular buffer, either by using polling or interrupt service techniques. The first rated output is greater than the second rated output, and the second rated output is equal to or greater than the third rated output. The method may also include determining a cluster-level route between the source cluster and a destination cluster comprising a destination node responsive to the cluster-level route request and using a plurality of the cluster leader nodes. Preferred compounds include compounds of formula I: .