@Suntor This has requested many times, but the consensus seems to be that, on account of no new features of note having apparently been introduced in A12 or A13, the answer is no. @svl7 Sorry to ask twice, but I didn't find an answer in any of the pages of this thread before or after last September (when I last mentioned it): is there a way to expose and control the AC adapter’s authentication handshake? Would this be possible using either the current A11 modified BIOS, or maybe with some (guided) modifications to it? I would do this myself if I knew what to look for, and would of course be able to test the changes to whatever BIOS was necessary. I'm on my second 240W AC adapter from Dell, and it recently quit working just like the last one did. I'm a few months out of warranty at this point though, which means having to pay about $65 USD to buy a third 240W, which is just as liable stop functioning properly in the same manner. I’ve used both Flextronics and Delta adapters, with two different motherboards, but still inevitably have the same issue. The BIOS no longer recognize it as a 240W adapter, and as such refuses to either charge the battery or run the CPU and GPU at full clocks. The problem seems to lie in a failure of a parasitically powered ID chip in the adapter itself (which is delivered by the middle pin visible when looking down the plug). I don’t know if the authentication is too much of a hardware-level thing unfortunately, but there is some information about how Dell’s ID chip works with these adapters here: 330 Watt power supply for Alienware M17x » imsolidstate 330W power supply for M17x update » imsolidstate http://forum.techinferno.com/alienware-m17x-aw-17/1948-240w-psu-id-chip-330w-psu-2.html http://web.archive.org/web/20130102101025/http://www.laptops-battery.co.uk/blog/dell-ac-power-adapter-type-cannot-be-determined-solution/