For the installation of the BL-6 Metronik V2 blood pressure device you need to have the drivers that can be downloaded from the following LINK
For the QRS-trigger cable you need also drivers that are included in the driver package of the first release of the BL-6 blood pressure device that can be downloaded from this LINK
Drivers from the first model, see piucture picture Metronik V1, can be downloaded using this LINK
Metronik Version 2 (V2)
Metronik Version 1 (V1)