ASIC Hub allows user to register and monitor their own ASICs in Hive OS without using a special firmware with Hive OS client.
ASIC Hub acts as a bridge between ASICs and Hive OS platform. It collects stats from each ASIC and sents it to HiveOS and applies configuration from Hive OS to your ASICs (e.g. applying flightsheets).
As ASIC Hub is an separate software, it introduces some advantages and limitations in comparison to custom firmware.