Registry Recurse - Finding and changing a d-word subkey

I'm trying to find a way in PowerShell where I can change the "RoamingPreferredBandType" key located in [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e972-e325-11ce-bfc1-08002be10318}\

The tricky part is that we're looking through several different laptop models and this key is located in different subkeys of the hive. For example:

One laptop model the "RoamingPreferredBandType" is located in 

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e972-e325-11ce-bfc1-08002be10318}\0001]

whereas another is located in 

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e972-e325-11ce-bfc1-08002be10318}\0002]

I'm looking for a way to recurse through this subset of keys regardless of where it is located to change the "RoamingPreferredBandType" key.