This is a DOCSIS 2.0 cable modem from Shenzhen Skyworth. The exact specifications for this device is not listed in their website and so is unknown. This modem is supplied and used by Asianet Broadband, an Indian ISP who uses their existing coaxial cable network to provide broadband internet access.
The device operates at 5 VDC supplied by an adapter and has rated current of 1A. You can login to the web interface of the modem using the IP 192.168.100.1. The web interface allows you to change the downstream frequency and shows various parameters.
My experience with this modem is not that good. It will take sometime to connect or reconnect in case of disconnection. The upload speed of this modem is very very low! Frequent disconnection is another problem.