How To Check and Perform Downloads or uploads are slower than expected Speed Test:
Accessing The Satellite Modem
Getting ESN(Electronic Serial Number)of the Satellite Modem
If you can see your Yahclick Modem you will find the ESN on the back of the modem itself.
The location is between the DC Power Connector and the SAT.IN Connector.
The ESN is the seven digits number starting with 2XXXXXX.