I think you'll find that the slides are proprietary to the case. When I had this problem, I cobbled a bracket out of bits of wood, double sided sticky tape and hot-melt glue. Alternatively a new case may be the easiest solution.
Fujitsu Lifebook P727 laptop review
11 best portfolio websites for designers and artists
Office for Mac buying guide: Price, Office 2017 rumours & new features
Comment désactiver les programmes qui s'exécutent au démarrage de Windows 10 ?