The mei/ class sub-directory belongs to mei device class
 
 
-What:          /sys/class/mei/meiN/
+What:          /sys/class/mei/mei<N>/
 Date:          May 2014
 KernelVersion: 3.17
 Contact:       Tomas Winkler <tomas.winkler@intel.com>
                The /sys/class/mei/meiN directory is created for
                each probed mei device
 
-What:          /sys/class/mei/meiN/fw_status
+What:          /sys/class/mei/mei<N>/fw_status
 Date:          Nov 2014
 KernelVersion: 3.19
 Contact:       Tomas Winkler <tomas.winkler@intel.com>
                Also number of registers varies between 1 and 6
                depending on generation.
 
-What:          /sys/class/mei/meiN/hbm_ver
+What:          /sys/class/mei/mei<N>/hbm_ver
 Date:          Aug 2016
 KernelVersion: 4.9
 Contact:       Tomas Winkler <tomas.winkler@intel.com>
                The HBM protocol version negotiated
                between the driver and the device.
 
-What:          /sys/class/mei/meiN/hbm_ver_drv
+What:          /sys/class/mei/mei<N>/hbm_ver_drv
 Date:          Aug 2016
 KernelVersion: 4.9
 Contact:       Tomas Winkler <tomas.winkler@intel.com>
 
                The HBM protocol version supported by the driver.
 
-What:          /sys/class/mei/meiN/tx_queue_limit
+What:          /sys/class/mei/mei<N>/tx_queue_limit
 Date:          Jan 2018
 KernelVersion: 4.16
 Contact:       Tomas Winkler <tomas.winkler@intel.com>
                Set maximal number of pending writes
                per opened session.
 
-What:          /sys/class/mei/meiN/fw_ver
+What:          /sys/class/mei/mei<N>/fw_ver
 Date:          May 2018
 KernelVersion: 4.18
 Contact:       Tomas Winkler <tomas.winkler@intel.com>
                There can be up to three such blocks for different
                FW components.
 
-What:          /sys/class/mei/meiN/dev_state
+What:          /sys/class/mei/mei<N>/dev_state
 Date:          Mar 2019
 KernelVersion: 5.1
 Contact:       Tomas Winkler <tomas.winkler@intel.com>
                POWER_DOWN
                POWER_UP
 
-What:          /sys/class/mei/meiN/trc
+What:          /sys/class/mei/mei<N>/trc
 Date:          Nov 2019
 KernelVersion: 5.5
 Contact:       Tomas Winkler <tomas.winkler@intel.com>
                status information into trc status register
                for BIOS and OS to monitor fw health.
 
-What:          /sys/class/mei/meiN/kind
+What:          /sys/class/mei/mei<N>/kind
 Date:          Jul 2020
 KernelVersion: 5.8
 Contact:       Tomas Winkler <tomas.winkler@intel.com>