I'm having the same problem as the OP.  Any chance you could update for the same brand motherboard but with the B650 chipset?  (Aorus Elite AX) The fan that I have plugged into the "SYS_FAN4_PUMP" header is showing up and reporting RPM in UEFI, HW Info, and other monitoring systems, but it's not available in AIDA64:
 
	 
 
	------[ Versions ]------
 
	Program Version : AIDA64 Extreme v7.30.6914 Beta 
	LLKD Version    : 2 
	BenchDLL Version: 4.6.897.8-x64 
	Windows Version : Microsoft Windows 11 Pro 10.0.22631.3737 (64-bit) 
	GetProductInfo  : 0x00000030
 
	------[ Motherboard Info ]------
 
	Motherboard ID      : <DMI> 
	Motherboard Model   : Gigabyte B650 Aorus Elite AX 
	Motherboard Chipset : AMD B650, AMD K19.6 FCH, AMD K19.6 IMC
 
	DMI MB Manufacturer : Gigabyte Technology Co., Ltd. 
	DMI MB Product      : B650 AORUS ELITE AX 
	DMI MB Version      : x.x 
	DMI MB Serial       : Default string 
	DMI SYS Manufacturer: Gigabyte Technology Co., Ltd. 
	DMI SYS Product     : B650 AORUS ELITE AX 
	DMI SYS Version     : Default string 
	DMI SYS Serial      : Default string 
	DMI BIOS Version    : FB1
 
	ITE SuperIO Port           = 2Eh 
	ITE SuperIO HWMonitor Port = 0A40h     (    0A40h /     0000h) 
	ITE SuperIO HWMonitor MMIO = 00000000h (00000000h / 00000000h) 
	ITE SuperIO Device ID      = 8689h     (    8689h /     0000h) 
	ITE SuperIO Version        = 02h       (      02h /       00h)
 
	Winbond SuperIO Port              = 00h 
	Winbond SuperIO HWMonitor Port/60 = 0000h (0000h / 0000h) 
	Winbond SuperIO HWMonitor Port/64 = 0000h (0000h / 0000h) 
	Winbond SuperIO Device ID         = 0000h (0000h / 0000h)
 
	Fintek SuperIO Port           = 00h 
	Fintek SuperIO HWMonitor Port = 0000h (0000h / 0000h) 
	Fintek SuperIO Device ID      = 0000h (0000h / 0000h)
 
	SMSC SuperIO Port           = 00h 
	SMSC SuperIO HWMonitor Port = 0000h (0000h / 0000h) 
	SMSC SuperIO Device ID      = 0000h (0000h / 0000h)
 
	ASpeed SuperIO Port = 00h
 
	------[ LM78 ISA Sensor Device at 0A40 ]------
 
	0000  19 10 00 80  DF FF 00 20  FF 98 48 C8  34 47 5D 42 
	0010  FF FF FF 77  C7 7F 7F 7F  02 05 05 FF  FF FF FF FF 
	0020  53 A6 A8 A8  6B 60 A5 89  81 1B 22 29  1E 22 24 80 
	0030  FF 00 FF 00  FF 00 FF 00  FF 00 FF 00  FF 00 FF 00 
	0040  7F 7F 7F 7F  7F 7F 5F 40  AD 6A D4 00  9D 08 FF FF 
	0050  FF 18 7F 7F  7F 40 00 00  90 00 0D 12  65 00 00 00 
	0060  00 14 46 8B  06 01 00 C0  00 14 3C 00  05 01 00 FF 
	0070  00 14 3C 2D  05 01 00 3E  00 14 3C 2D  05 01 00 7F 
	0080  99 08 FF FF  FF FF FF FF  00 00 00 00  00 96 00 76 
	0090  00 00 00 00  FF 10 30 30  42 99 00 00  01 83 F2 29 
	00A0  00 14 46 42  06 01 00 D0  00 14 3C 2D  05 01 00 7F 
	00B0  5B 5B 82 76  7F 7F 83 00  83 00 80 1B  80 80 80 00 
	00C0  00 C0 00 00  AA 01 10 10  10 10 10 10  10 10 10 10 
	00D0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF 01 
	00E0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00F0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF 00 00
 
	   0029 002A 002B 
	T:   27   34   41 
	T:   27   34   41 
	T:   27   34   41 
	T:   27   34   41 
	T:   27   34   41 
	T:   27   34   41 
	T:   27   34   41 
	T:   27   34   41 
	T:   27   35   41 
	T:   27   35   41
 
	   0020 0021 0022 0023 0024 0025 0026 0027 0028 
	V:  56   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.29375 V ] 
	V:  56   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.79375 V ] 
	V:  56   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.79375 V ] 
	V:  56   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.79375 V ] 
	V:  56   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.79375 V ] 
	V:  56   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.79375 V ] 
	V:  56   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.79375 V ] 
	V:  4D   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.29375 V ] 
	V:  4D   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.79375 V ] 
	V:  4D   A6   A8   A8   6B   60   A5   89   81   [ VID = 0.79375 V ]
 
	------[ K15.6/K15.7/K16.6/K17/K17.1/K17.2/K17.3/K17.5/K17.6/K17.7/K18/K19.2/K19.4/K19.5/K21 PM2 at 0CD0 ]------
 
	0000  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0010  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0020  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0030  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0040  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0050  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0060  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0070  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0080  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0090  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00A0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00B0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00C0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00D0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00E0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00F0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF
 
	------[ K15.6/K15.7/K16.6/K17/K17.1/K17.2/K17.3/K17.5/K17.6/K17.7/K18/K19.2/K19.4/K19.5/K21 PM at 0CD6 ]------
 
	0000  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0010  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0020  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0030  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0040  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0050  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0060  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0070  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0080  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	0090  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00A0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00B0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00C0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00D0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00E0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF 
	00F0  FF FF FF FF  FF FF FF FF  FF FF FF FF  FF FF FF FF
 
	------[ ACPI Temperatures & Fans ]------
 
	_TZ_.THM0._TMP             :  
	_TZ_.THM1._TMP             :  
	_TZ_.THR0._TMP             :  
	_TZ_.THR1._TMP             :  
	_TZ_.TZ00._TMP             :  
	_TZ_.TZ01._TMP             :  
	_TZ_.RTMP                  :  
	_TZ_.RFAN                  :  
	_TZ_.RFAN(0)               :  
	_TZ_.RFAN(1)               :  
	_SB_.ATKD._HID             :  
	_SB_.ATKD.TMPR             :  
	_SB_.PCI0.LPC0.EC0_.CCTV   :  
	_SB_.PCI0.LPC0.EC0_.LRPM   :  
	_SB_.PCI0.LPC0.EC0_.HRPM   :  
	_SB_.PCI0.SBRG.EC0_.ECPU   :  
	_SB_.PCI0.SBRG.EC0_.TACH(0):  
	_SB_.PCI0.SBRG.EC0_.TACH(1):  
	_SB_.PCI0.SBRG.EC0_.TAH0   :  
	_SB_.PCI0.SBRG.EC0_.TAH1   :  
	_SB_.PCI0.SBRG.EC0_.ST00   :  
	_SB_.PCI0.SBRG.EC0_.SC01   :  
	_SB_.PCI0.SBRG.EC0_.SC02   :  
	_SB_.PCI0.SBRG.EC0_.SC03   :  
	_SB_.PCI0.SBRG.EC0_.SC04   :  
	_SB_.PCI0.SBRG.EC0_.SC05   :  
	_SB_.PCI0.SBRG.EC0_.SC06   :  
	_SB_.PCI0.SBRG.EC0_.TH0R   :  
	_SB_.PCI0.SBRG.EC0_.TH1R   :  
	_SB_.PCI0.SBRG.EC0_.F0TS   :  
	_SB_.PCI0.SBRG.EC0_.F1TS   :  
	_SB_.PCI0.PIB_.EC0_.TCRT   :  
	_SB_.PCI0.SBRG.EC0_.CTPM   :  
	_SB_.PCI0.SBRG.EC__.CPUT   :  
	_SB_.PCI0.SBRG.EC__.SYST   :  
	_SB_.PCI0.LPC_.EC0_.CTMP   :  
	_SB_.PCI0.LPCB.EC0_.CTMP   :  
	_SB_.PCI0.LPC_.EC0_.TMP1   :  
	_SB_.PCI0.LPC_.EC0_.TMP2   :  
	_SB_.PCI0.LPC_.EC0_.TMPI   :  
	_SB_.PCI0.LPC_.EC0_.TMPV   :  
	_SB_.PCI0.LPCB.EC0_.A1TP   :  
	_SB_.PCI0.LPCB.EC0_.A2TP   :  
	_SB_.PCI0.LPCB.EC0_.FAN0   :  
	_SB_.PCI0.LPCB.EC__.TS1R   :  
	_SB_.PCI0.LPCB.EC__.TS2R   :  
	_SB_.PCI0.LPCB.EC__.TS3R   :  
	_SB_.PCI0.LPCB.EC__.F1FL   :  
	_SB_.PCI0.LPCB.EC__.F1FH   :  
	_SB_.PCI0.LPCB.EC__.F2FL   :  
	_SB_.PCI0.LPCB.EC__.F2FH   :  
	_SB_.PCI0.LPC_.H8EC.RTMP   :  
	_SB_.PCI0.LPC_.H8EC.LTMP   :  
	_SB_.PCI0.LPC_.H8EC.MTMP   :  
	_SB_.PCI0.LPC_.H8EC.GTMP   :  
	_SB_.PCI0.LPCB.H8EC.CTMP   :  
	_SB_.PCI0.LPCB.H8EC.DTMP   :  
	_SB_.PCI0.LPCB.H8EC.GTMP   :  
	_SB_.PCI0.LPCB.H8EC.ITMP   :  
	_SB_.PCI0.LPCB.H8EC.MTMP   :  
	_SB_.PCI0.LPCB.H8EC.STMP   :  
	_SB_.PCI0.LPCB.H8EC.PFAN   :  
	_SB_.PCI0.LPCB.EC0_.OTPC   :  
	_SB_.PCI0.LPCB.EC0_.VGAT   :  
	_SB_.PCI0.LPCB.EC0_.CHPT   :  
	_SB_.PCI0.LPCB.EC0_.CPUT   :  
	_SB_.PCI0.LPCB.EC0_.SYST   :  
	_SB_.PCI0.LPCB.EC0_.DTS1   :  
	_SB_.PCI0.LPCB.EC0_.DTS2   :  
	_SB_.PCI0.LPCB.EC0_.DIMM   :  
	_SB_.PCI0.LPCB.EC0_.FANH   :  
	_SB_.PCI0.LPCB.EC0_.FANL   :  
	_SB_.PCI0.LPCB.EC0_.CUTP   :  
	_SB_.PCI0.LPCB.EC0_.PHTP   :  
	_SB_.PCI0.LPCB.EC0_.DIMT   :  
	_SB_.PCI0.LPCB.EC0_.INLE   :  
	_SB_.PCI0.LPCB.EC0_.PANT   :  
	_SB_.PCI0.LPCB.EC0_.F0RM   :  
	_SB_.PCI0.LPCB.EC0_.F0DT   :  
	_SB_.PCI0.LPCB.EC0_.F1RM   :  
	_SB_.PCI0.LPCB.EC0_.F1DT   :  
	_SB_.PCI0.SBRG.EC0_.CUTP   :  
	_SB_.PCI0.SBRG.EC0_.PHTP   :  
	_SB_.PCI0.SBRG.EC0_.DIMT   :  
	_SB_.PCI0.SBRG.EC0_.INLE   :  
	_SB_.PCI0.SBRG.EC0_.PANT   :  
	_SB_.PCI0.SBRG.EC0_.F0RM   :  
	_SB_.PCI0.SBRG.EC0_.F0DT   :  
	_SB_.PCI0.SBRG.EC0_.F1RM   :  
	_SB_.PCI0.SBRG.EC0_.F1DT   :  
	_SB_.SAMB.TMPC             :  
	_SB_.SAMB.TMPH             :  
	_SB_.STR0._TMP             :  
	_SB_.STR1._TMP             :  
	_SB_.STR2._TMP             :  
	_SB_.STR3._TMP             :  
	_SB_.STR4._TMP             :  
	_SB_.STR5._TMP             :  
	_SB_.STR6._TMP             :  
	_SB_.STR7._TMP             :  
	CPUT                       :  
	GPUT                       :  
	SYST                       :  
	FANT                       :  
	BATT                       :