Let me say, with playful candor :emotion-5:, that it is just as easy to update the BIOS on a T300 as a 755 when you are running a supported OS :) BIOS  updates on servers can be important, in that they often address known issues that can prevent them from becoming problems.  If you are running Windows 7, then it may not be a mission critical box, meaning that if one of those issues popped up, then its downtime/consequences would not be catastrophic.  Looking at the release notes, the BIOS updates add code to better support 2008 R2 (since R2 and W7 are built on the same kernel, this may apply to W7 too) and an update to the embedded NIC firmware.  The ESM firmware updates add better DRAC5 logging and fixes issues with Power Management features.  So, ask yourself ... do I need any of these?  If not, then skip it.  If so - or to be on the safe side - then take a little bit of time to make it happen. This file says "not applicable" under supported OS's, so they either didn't update the compatability, or it will not do a check of the current OS.  My experience is that it will probably check the OS to make sure it is supported, and a Server OS is probably what it is looking for ... but you might try it any way. BIOS - ftp://ftp.dell.com/bios/PET300_BIOS_WIN_1.5.1.EXE ESM - ftp://ftp.dell.com/esm/PET300_BMC_FRMW_WIN_R232788.EXE The other methods are not really very complicated, but let me suggest another, possibly more familiar method - updates from a bootable DOS disk: BIOS - ftp://ftp.dell.com/bios/PET300-010501C.exe ESM - ftp://ftp.dell.com/esm/PET300BmcA02.exe Alternatively, if the files at the top do not run on Windows 7, you could use Disk Management to shrink an existing partition by 20GB (10GB for 2003) or so, and install 2008 on it.  You would then be able to boot to Windows 7 AND Server 2008 - booting to 2008, you could easily run the files at the top and update your T300 just like you did your 755.  
The current Bios in my T300 is the version 1.3.0 I am using Window 7 Ultimate 64 bit and wondered what the latest version was I think it is 1.5.1? How easy is it to update? I have found this link [URL]~ck=mn and can navigate to my system but it doesn't list my OS which is understandable as Win 7 is not normally used on a server like this. Would it be safe to just download as I thought that there was a utility to use when one flashes the bios, as I have done with my Optiplex 755? Any help or advice here would be great Thanks Simon :emotion-1:  
Dell PowerEdge T300 Server how to update the Bios and current version.