Looks like a Ehiem pro 2 however it could be a cheap copy as the taps are not the eheim design one bit. Probs is fine just getting it to go and maintaining it shows a good filter really.
I don't think it is a genuine Eheim, its the cheapo copy - check the catches on the corners; theyre the wrong shape. The genuine ones are square shouldered, plus it says Eheim Professional on the round push-down syphon thingy. Taps are in the wrong place too.