Soon the PSP Go will be little more than an expensive plastic brick to UMD owners. A source told CVG that Logitech plans to release a UMD drive addon for the solid-state console. Not a lot is known about the device at this time. Gizmodo figures it presumably plugs into the MSPD card slot. The download-only PSP Go had been heavily criticized for not being backwards compatible with UMD based games.