Various VGA accessories and independent hacks were produced for these consoles, mostly by third-party manufacturers and hobbyists. However, since none of these consoles were capable of producing a native RGBHV signal at 31 kHz for standard VGA output, these devices were generally designed around an outboard color space transcoder and/or scan converter. The most common and inexpensive of these devices, as with most similarly low-end general purpose signal converters, generated a VGA signal from composite or S-Video, resulting in poor quality.