10.2.3 New Support Element Support Element Keyboard Mouse Monitor Figure 10-6 SEs location New with z15, a new Keyboard Mouse Monitor (KMM) device replaces the previous KMM  assembly that was mounted on a swing gate. Consider the following points: In z15, the SEs are two 1U rack-mounted hardware appliances that are installed at the top of  the z15 A-frame, as shown in Figure 10-6.  GLYPH<SM590000> The device is intended to be used by service personnel only. GLYPH<SM590000> One KMM is used. GLYPH<SM590000> KMM is stored in a cubby at the front of the A-frame, just below the SEs at EIA Rack Unit  39. A USB-C cable and mounting bracket are stored together with the KMM. GLYPH<SM590000> A cable is used to plug the device into a KVM switch at the front or the rear of the rack  when servicing the system. GLYPH<SM590000> Switching between SEs is done by using a button that is on the KVM. It also indicates  which SE is selected (see Figure 10-7 on page 416). GLYPH<SM590000> The KMM mounting bracket can be used to mount the device to any frame in the system  (front or rear sides). GLYPH<SM590000> The KMM can be used on any z15 system (no affinity to system with which it is shipped). Chapter 10. Hardware Management Console and Support Element  415