And does anybody know what kind of connector the gray one is on the left?
Is that a SEGA Saturn? What do you need a new PSU plug for?
LVP & LVJ Series connectors
http://www.greatplainselectronics.com/products.asp?cat=146
GPEs connectors will work, although they are not as tall as the originals
I am yet to find the right height after extensive searches. I suggest using the GPE product
The first one is definitely a JST. The second... may be some type of molex (there are some that don't clip into the socket, or resemble old HDD connectors).