The AutoSeis download panel consists of 20 GuruPlugs that function as a bridge between the HDR and Command HDR. Special software on the GuruPlug communicates with the HDR via USB protocol and Command HDR via Gigabit Ethernet to download the data. Offload rate for first generation HDRs is 10 MB/sec. 40 to 80 HDRs can be offloaded at any given time.