Steps to reproduce:

1. Hello! I have a Zabbix 5.0.1 and supermicro server with X8DTU-LN4+. Creating templat for ipmi, voltage,temperature and etc are gathering correctly but power supplies not.
2. In zabbix server logs: 

   29943:20210811:115606.071 Added sensor: host:'xxx:623' id_type:0 id_sz:11 id:'PS2 Status' reading_type:0x6f ('sensor specific') type:0x8 ('power_supply') domain:'0' name:'(10.2).PS2 Status'
   29943:20210811:115606.072 Added sensor: host:'xxx:623' id_type:0 id_sz:11 id:'PS1 Status' reading_type:0x6f ('sensor specific') type:0x8 ('power_supply') domain:'0' name:'(10.1).PS1 Status'
   29943:20210811:115606.072 Added sensor: host:'xxx:623' id_type:0 id_sz:10 id:'PS Status' reading_type:0x6f ('sensor specific') type:0x8 ('power_supply') domain:'0' name:'(10.1).PS Status'

1. There are 3 ipmi sensor keys for power supply: PS Status, PS1 Status and PS2 Status.
2. Added them to template, but data is available only for PS Status (and it gets 0 value, that means no PS inserted, as i know). PS1 Status and PS2 Status (2 ps on server) writes this error:

   Not supported: sensor data is not available

Result:
See screenshots