The top exit feature options of z14 servers in a raised floor environment are shown in  Figure 10-4. Note:  Top exit feature support is  not  available for water hoses. Such hoses  must  go  through the system from underneath the raised floor. If you install the z14 server in a non-raised floor environment, you can select only  radiator-cooled models. The Non-Raised Floor Support feature code (FC 7998) is required.  The Top Exit I/O Cabling feature code (FC 7942) and one of three types of Top Exit Line  Cords (FC 8948, FC 8949, FC 8951) also must be ordered. All cables must exit from the top  frame of the z14 server, as shown in Figure 10-5. Non-raised floor Chapter 10. Environmental requirements  399 Figure 10-5 Non-raised floor options Figure 10-4 Raised floor options Line c ords I/ O c ables I/ O an d  power under  th e  fl oor RF T ailgate RF T ailgate Ov e rhead I/ O po w er  un der th e fl oor RF T ailgat e RF T ailgat e O v erh ead I/O and po wer  RF T ailgate RF T ailgate Opt water On ra is ed floo r, e it he r  ra diat or air o r wa ter co oling is supported. There isNO overhead  support for cooling water  supply – return . RF Tai lgate RF Tailgate O verhe ad  p o wer requ ire s overh e a d I /O fe atur e a s a co- re q . I/O c a bl e s can be ro ut ed up or down Line C ords I/ O Cables OH  I/O OH  Po wer 