This unit is not overclocked and is configured to run at 180GH/s. I can overclock it to 200GH/s at your request. Unit has been tested to ensure functionality. I will enter the mining configuration details so all you have to do is plug it in and it will start mining. ANTMINER S1 Dual Blades Spec Hash rate: 180 GH/s to 200GH/s Power consumption: about 360 W from the wall Power supply: 3 +12V DC input Power efficiency: 2 W/GH/s on wall Size: 135 mm x 155 mm x 300 mm Network connection: Ethernet Cable / WIFI Cooling: 12cm PWM fans and customized heat sink More than 20% of the Network Hash Rate is contributed by ANTMINER S1 Stand alone: After you configuring it, S1 mines alone without a stratum proxy Quiet: ANTMINER uses power effective mining chips in the world, and the customized heat sink. All heat can be brought away by very slow wind. ANTMINER runs quietly. Stable: ANTMINER mines 24 hours a day, without unexpectedly stopping mining.