I'm going to buy a refurbished T620 and want to use GPUs on it. I read about that this needs a small board (VDY5T) for GPU power supply. I've searched over eBay and this part is quite hard to find. Meanwhile I also found that T630 also has a similar power supply board (X7C1K), which looks quite alike VDY5T but usually much cheaper.

So I wonder if X7C1K is compatible with T620. It will be appreciated if someone can give an official answer or speak from expirence.

Thanks