Need help with power supply for L3++

I am starting with my first ASIC and L3++ to merge mine doge and Lite. It is used and came with a DELL 1100w power supply. Should I use this or do I need to order a bitmain APW3+? An suggestions or knowledge here would be great.

What are the amps on the charger? Verify requirement for miner as well and you should be ok