Review: Bitmain Antminer U2 2Gh/s USB Bitcoin ASIC Miner
This is an upgrade from the prior version with a huge heatsink attached.
- The speed runs from 1.6 to 2.2 overclocked.
- Yes - it performs as promised.
- can be easily chained to same control system or computer
- If using a USB port hub - you will need to skip a slot each time because of the oversized heatsinks.
- no other major issues
Price from $18 to $22 dollars each.