diff --git a/README.md b/README.md
index 7302c89..22be1c4 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ hopefully all Supermicro X8 / X9 / X10 / X11 boards with IPMI. I have personally
 #### Hardware
 * Supermicro X9DRi-LN4+
 * Supermicro X8SIL-F (IPMI equipped variant)
+* Supermicro X9SRW-F (IPMI equipped variant, using external ipmitool from OS repos)
 
 #### Operating Systems
 * VMWare ESXi 6.7
@@ -25,6 +26,7 @@ hopefully all Supermicro X8 / X9 / X10 / X11 boards with IPMI. I have personally
 * Ubuntu 20.04
 * Ubuntu 18.04
 * Ubuntu 16.04
+* Proxmox VE 8.4 / Debian 12 "Bookworm"
 
 For this script to work, you **MUST** have an IPMI module **AND** set your fan speeds to FULL SPEED in the BIOS otherwise
 this tool fights for control with the fans and they will spin up and down repeatedly (yo-yo'ing).
@@ -63,6 +65,23 @@ Finally, run `crontab -e` and add the following line;
 @reboot /opt/FanControl/daemon.sh
 ~~~
 
+#### Proxmox / Debian
+On Proxmox systems, I would suggest installing the ipmitool package from the operating system's repository:
+
+~~~
+sudo apt-get install ipmitool
+~~~
+
+Then, similar to Ubuntu instructions above, find a suitable place for the scripts to live such as `/opt/FanControl/`.  Personally I preferred `/opt/Supermicro-Fan-Control` because then I could just:
+* login as root
+* install git: `apt-get install git`
+* change directory to `/opt/`: `cd /opt`
+* clone the repository: `git clone 'https://github.com/jasongaunt/Supermicro-Fan-Control.git'`
+* change directory to `/opt/Supermicro-Fan-Control`: `cd Supermicro-Fan-Control`
+* edit the configuration file as needed: `nano config.ini`, ensuring the IPMITOOL is set properly
+
+Finally, run `crontab -e` as under Ubuntu, or use another method to load and run it on startup.
+
 
 Hardware fan assignments
 ------------------------
@@ -84,6 +103,8 @@ Supermicro assume Zone A is used for cooling the main system and Zone B for cool
 * Zone A = Anything that cools the CPU, memory and motherboard
 * Zone B = Anything that cools PCIe cards and / or drive bays
 
+For at least one Supermicro X9SRW-F board in a 2U case, it seemed these were reversed, so YMMV.
+
 #### Desktop cases
 
 If, like myself, you're using a Supermicro board in a desktop case, chances are you've already using dedicated CPU coolers with their
@@ -166,3 +187,7 @@ PWM%
 The values included in `config.ini` by default are sane values to start with. Good luck!
 
 ~ JG
+
+#### Hushing Loud Server Fans
+
+The fans on my X9SRW-F 2U server were extremely loud by default, even with no load and CPU at 30C.  I set 1% fan speed with ~25C/77F ambient room temperature causing my low TDP CPU to idle at 31C with the fans almost silent.  In this same configuration with 1% fan speed, my CPU only got up to around 45C at full load.  To be safe, I made sure to set my minimum temperature to 33C, and kept my 100% speed threshold far below the CPU thermal limits, but YMMV.  -BG
diff --git a/config.ini b/config.ini
index d11a79f..9ce650a 100644
--- a/config.ini
+++ b/config.ini
@@ -33,3 +33,4 @@ Temp Averaging Window = 5
 Ignore Temp Change Amount = 0
 Exit On IPMI Failure = False
 Debug Mode = False
+IPMITOOL = ipmitool
diff --git a/fan-control.py b/fan-control.py
index e4c7e43..05fc550 100755
--- a/fan-control.py
+++ b/fan-control.py
@@ -14,6 +14,7 @@
 # Import required modules
 import os, sys, re, time, configparser, statistics
 from subprocess import Popen, PIPE
+import shutil
 
 # Set up our default variables with safe values
 ZONE_A_SENSOR_NAME_SEARCH = r'^.*CPU.*$'
@@ -32,10 +33,12 @@
 IGNORE_TEMP_CHANGE_AMOUNT = 1
 EXIT_ON_FAILURE = False
 DEBUG = False
+IPMITOOL = False
 
 # Wrapper for (re)reading config.ini
 def reload_config():
 	global DEBUG
+	global IPMITOOL
 	if DEBUG: sys.stdout.write('Reloading config... '); sys.stdout.flush()
 	config = configparser.ConfigParser()
 	config.read(os.path.join(os.path.dirname(__file__), './config.ini'))
@@ -59,10 +62,61 @@ def reload_config():
 	global EXIT_ON_FAILURE;           EXIT_ON_FAILURE           = config.get('General Configuration', 'Exit On IPMI Failure').lower() in ["yes", "true", "1"]
 	DEBUG = config.get('General Configuration', 'Debug Mode').lower() in ["yes", "true", "1"]
 
+	global IPMITOOL;
+	ipmitool_bin = None
+	try:
+		IPMITOOL = config.get('General Configuration', 'IPMITOOL')
+		if IPMITOOL.lower() in [ "", "0", "false", "none" ]:
+			IPMITOOL = False
+		else:
+			# validate the external command exists, or replace with False
+			ipmitool_bin = shutil.which(IPMITOOL)
+			if ipmitool_bin is None:
+				sys.stdout.write("\n\nError: Unable to find ipmitool in system path: " + IPMITOOL + "\n")
+				IPMITOOL = False
+	except configparser.NoOptionError as e:
+		if DEBUG: sys.stdout.write("\n" + str(e) + "\n")
+		IPMITOOL = False
+	# if false, use the builtin IPMICFG tool
+	if IPMITOOL == False:
+		pass
+	elif not os.path.isfile(ipmitool_bin):
+		err = "Unable to find external IPMITOOL at: " + ipmitool_bin
+		sys.stdout.write("\n\nError: " + err + "\n")
+		IPMITOOL = False
+	elif not os.access(ipmitool_bin, os.X_OK):
+		err = "Unable to execute external IPMITOOL at: " + ipmitool_bin
+		sys.stdout.write("\n\nError: " + err + "\n")
+		IPMITOOL = False
+	if DEBUG and IPMITOOL:
+		sys.stdout.write("\nUsing ipmitool: " + IPMITOOL + "\n")
+
 	if DEBUG: sys.stdout.write("done\n")
 
+# call external tool for making IPMI calls
+def call_ipmitool(params):
+	global IPMITOOL
+	IPMICWD = os.path.dirname(__file__)
+	if params[0] in [ "-raw", "-sdr" ]:
+		params[0] = params[0][1:]
+	else:
+		if DEBUG:
+			sys.stdout.write('Unknown params[0]: ' + params[0] + '\n')
+			sys.stdout.flush()
+		err = "Error: Unknown argument in call to external ipmitool: " + params[0]
+		return [-1, '', err]
+	IPMICMD = [IPMITOOL] + params
+	if DEBUG: sys.stdout.write(' ' + ' '.join(IPMICMD) + '\n')
+	process = Popen(IPMICMD, stdout=PIPE, cwd=IPMICWD)
+	(output, err) = process.communicate()
+	EXITCODE = process.wait()
+	if DEBUG: sys.stdout.write("IPMITOOL exit code: %d\n" % EXITCODE)
+	return [EXITCODE, output.decode('utf-8'), err]
+
 # Wrapper for making IPMI calls
 def call_ipmi(params):
+	global IPMITOOL
+	if IPMITOOL: return call_ipmitool(params)
 	IPMICMD = "./IPMICFG-Linux.x86"
 	IPMICWD = os.path.join(os.path.dirname(__file__), "./ipmitool/")
 	IPMICMD = [IPMICMD]	+ params
@@ -141,11 +195,34 @@ def calculate_pwm(PEAK_TEMP, MIN_TEMP, MAX_TEMP, MIN_FAN_PWM, MAX_FAN_PWM):
 		line[0] = line[0].strip()
 		line[1] = line[1].strip()
 		line[2] = line[2].strip()
+		# external ipmitool has a different sdr output format
+		if IPMITOOL:
+			temp = line[2]
+			line[2] = line[1]
+			line[1] = line[0]
+			line[0] = temp
+			del temp
 		if DEBUG: sys.stdout.write(line[1] + ": " + line[2] + "\n"); sys.stdout.flush()
 
 		# Check to see if we have a failed fan
 		if ((line[0].lower() == "fail") and ("fan" in line[1].lower())): FAILED_FAN = True
 
+		# convert alternate temperature format to expected format
+		match = re.match(r'^(\d+) degrees (C|F)$', line[2])
+		if match:
+			if match.group(2) == 'F':
+				# convert from Fahrenheit to Celsius
+				celsius = (int(match.group(1)) - 32) * 5 // 9
+				line[2] = str(celsius) + "C/" + match.group(1) + "F"
+				#sys.stdout.write("F alternate format: " + line[1] + ": " + line[2] + "\n")
+			elif match.group(2) == 'C':
+				fahrenheit = (int(match.group(1)) * 9 // 5) + 32
+				line[2] = match.group(1) + "C/" + str(fahrenheit) + "F"
+				#sys.stdout.write("C alternate format: " + line[1] + ": " + line[2] + "\n")
+			elif DEBUG:
+				sys.stdout.write("Error: unknown unit in alternate format: " + line[1] + ": " + line[2] + "\n")
+		del match
+
 		# Only continue past this point of the for-loop if we have a temperature value
 		if not re.match(r'\d+C\/\d+F', line[2]): continue