Message from Shane Hurley (shanejah at hotmail.com) on February 27th, 2017 at 10:37PM (GMT). Hey there! I currently have a Hewlett Packard Portable Plus but NO POWER SUPPLY! I actually have the original leather case for it too, for whatever that's worth. Here's the ML & SL: Model Number 45711F Serial Number 2629A15219 I know these things can be of big value to some folk but not me and I'd love for it to go somewhere where it could be used or loved. If this is something you'd like, I'd be happy to trade for anything video game related. I have a small retro games stall open on weekends here in Ireland and am always on the lookout for ways to make it work. I'm sure you understand the way it can be.