JST VL 8 + 6 Pin to Molex Mini Fit 12 + 8, this can go between anything with JVS power input like Sega Naomi, and a power supply with Molex Mini-Fit like the Wei-Ya P271 for example. Length end to end is about 1 foot (~11.5 inches). Sanwa SWN-JVS is 12 + 6 and I think it is pinned differently so please do not assume it'll just work for that use case, check wiring diagrams. Please check carefully to make sure you can use this. No returns are accepted. Thanks for your interest.