Hi, I ran 3 x 10m network cables under the floorboards of my house to various rooms and cut off the ends and terminated them to RJ45 keystone jacks and wallplates. I then connected the 3 'router ends' from wallplate to router and tested all the other end connections by plugging in an old xp laptop. The laptop picked up an IP from the router and had internet access so I assumed all was well. I'm now finding that some networked devices will pick up an IP and work and some wont. Devices that will work are: The aforementioned XP laptop & a WD Live Devices that wont work are: AV Receiver. Raspberry Pi. The devices that don't work on my DIY cabling are verified as working when I plug straight into the router. I assumed either everything would work or not work. How can this happen? thanks in advance for any help.