Hi all we have 3 lapsafe laptop trolleys for sale we all to fit dell laptops (we had D520's), should fit most dells hold 30 laptops each 2 work perfectly one has one bay that doesnt charge just needs a new cable which can be obtainded very cheaply These cost 2500 each when new we will be willing to take any resonable offer!! If you want to ask any questions or want photos Pmail me.