TP link Archer VR400 and Deco M5
I recently swapped ISP and the modem / router they supplied was rubbish. So, I replaced it with a TP Link Archer VR400 VDSL modem / router and it greatly improved things. I have a WD MyDrive connected to one of the ethernet ports on the VR400. I then bought a TP Link Deco M5 system, set it up in router mode and turned off the wifi on the VR400. This was another great improvement. However, I can no longer connect to the WD MyDrive. I realise that this is because it is still connected to the VR400 and is on a different IP range. I don't want to move the drive into another room to connect to a M5 ethernet port. What would be the best way to configure my setup to be able to access the WD drive?