After a bit of digging, I foudn that the wall behind the cluster of Thinkpads in the Columbus module is made up of European Drawer Rack modules[0] which are basically 19in racks.  NASA has its own International Standard Payload Rack (ISPR) module system[1].  It would be interesting to see some articles on the power and data infrastructure of the station.<p>[0] <a href="http:&#x2F;&#x2F;www.esa.int&#x2F;Our_Activities&#x2F;Human_Spaceflight&#x2F;Columbus&#x2F;European_Drawer_Rack" rel="nofollow">http:&#x2F;&#x2F;www.esa.int&#x2F;Our_Activities&#x2F;Human_Spaceflight&#x2F;Columbus...</a><p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;International_Standard_Payload_Rack" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;International_Standard_Payload...</a>