New site looks nice

Quick question: what's the difference between ports 3057 & 3058?
eu1.zhash.pro 3057 GPU (most used)
eu1.zhash.pro 3058 Single GPU
eu1.zhash.pro 3059 Multi GPU & Farms
The description above leaves me a little confused.

3057 is the same as on old server. 3059 is modified port. 3057 was left for migration, lots of miners was autoswitched to new server