MFDoomPSPMs4GB

A quote from the now defunct thread.

 It fits perfect on the back left side of the PSP if your facing it. I moded the adapter to the smallest I could so it would fit on the only place I could find to put it on the back. It fits perfect on the back right side (if 
 you are looking at the back of the PSP) without sticking out the top or bottom. The memory MFDoomPSPMs4GB adapter is detachable and still allows the UMD slot to open and load any UMD's you might have. The memory slot door also 
 closes with the small ribbon cable adapter running to the 4gb MS adapter unit on the back of the PSP. When you play on the PSP with the MFDoomPSPMs4GB adapter, it feels great, almost like its not there or a nice grip for 
 holding the PSP during game play, controlling with it on had no effect on my game play. I fit 18 PSP games, SNES, NES, and Genesis emu's with roms with ease, all of them played perfect. 
 I just got the Nyko PSP Home Theatre Experience (AMAZING) and once the PSP is in its upright position in the Nyko, the 4gb memory MFDoomPSPMs4GB unit sits in the back where you cant see while I watch 4gb of mp4 movies at good 
 quality, none of this 15fps, you can convert now at 29.9fps with better sound as well. This is the first prototype made, there will be a version 1.1v coming soon which will include an even smaller MFDoomPSPMs4GB adapter unit, 
 satin black paint, and a blue LED. 

Images

More Info

https://www.elotrolado.net/hilo_mfdoompspms4gb-v1-0-prototype-4gb-hack-psp-adapter-unit_439486