The modem has four Ethernet ports and one USB port. It comes with the SIM installed. The modem operates on the 2300 MHz network. The modem weighs 275 grams. The money-back guarantee is valid for 14 days from activation. On making a call with your complaint, a check will be carried out as you are on the phone. Tests are carried out for coverage and/or signal. if it is established that the coverage and/or signal is not optimum, the money back is processed. If you have purchased online or from the company store, you get the cost refunded minus the delivery charge. If you bought from a retail store, you need to return it after having confirmed of coverage or signal failure.