Hello,
I have around 30 AntMiner u1s. During testing I found some don't give hardware errors at 1.8ghz and others at 2.0. Is it possible to run them at different frequencies on the same computer/miner software and if so how would I go about doing this? Thank you for your help
You should be able to have different settings per device, for example BFGMiner (see the readme.txt file) has the option
--set-device <arg> Set default parameters on devices; eg, NFY:osc6_bits=50
You'll need to do some research and find the correct syntax for setting individual devices on Antminer U1. Suggest that you read
https://bitcointalk.org/index.php?topic=390929.0Cheers