The Bitmain Antminer U1 is a USB Bitcoin (BTC) miner that hashes at 1.6 GH/s, but overclocks up to 2.2 GH/s. The miner is very power efficient, pulling only 2 watts. This is a great way to enter the bitcoin mining game. Plug it into a USB, run CGMiner or BFGMiner, and you're set!
Specifications:
- For only Bitcoin mining
- Icuras support SHA256 algorithm
- 2014 model: v1.1 board
- Default hash rate: 1.6 GH/s, can overclock by command up to 2.2 GH/s
- Power consumption: 2 W on USB 5V @ 1.6G
- Power supply: 5 V DC input (from USB)
- Size: 60 × 25 × 10 mm
How to use?
You can use with your computer / laptop (supported OS: Windows, Linux, Mac OS X) or direct with router (OpenWrt / DD-WRT).
Required driver: CP210x USB
Plug in your Antniner U1 to a USB port on your computer / laptop / router.
Start mining software:
cgminer.exe --bmsc-options 115200:20 -o pool_url:pool_port -u worker_name -p worker_password --bmsc-freq 0781
bfgminer.exe -o pool_url:pool_port -u worker_name -p worker_password -S antminer:all --set-device antminer:clock=x0781
To overclock your Antniner U1, you will change that last part of the running parameter. The number following bmsc-freq and antminer:clock=x will change:
- for 1.6 GH/s use 0781 (default)
- for 1.8 GH/s use 0881
- for 2.0 GH/s use 0981
- for 2.2 GH/s use 0A81
Keep in mind that the Antminer gets very hot very quickly when you overclock. Your must add additional cooling to your device. I recommend a strong fan blowing cool air directly onto your Antminer U1! | 
