In order to install a PVDM into the Cisco 2800 series simply follow the steps below. Firstly power down the router and remove the case by undoing the case screws. At the back of the router near the power supply you will notice the memory (DIMM Slots) and behind them the PVDM slots (which are white). If you look closely on the mother board you will notice that one is labeled PVDM0 and the other PVDM1. If you are only installing one PVDM then you will need to install it in the PVDM0 slot. The PVDM has a little notch cut out of it which means it will only fit into the slot one way. Locate the PVDM into the slot at a slight angle and then tip pull it upright until the clips click into place and hold it in position. Put the case back onto the router and switch it on. Once booted do a show inventory and you should now see the PVDM listed.