Innosilicon T4U28 ASIC chip for T3+ hash board The T4U28 chip is used to replace the faulty chip of the Innosilicon T3+ hash board. The main reason is chip failure when the miner's hash rate is 0 or low. By replacing the faulty T4U28 chip in time, the normal state of the hash board can be quickly maintained, the stability of the miner can be restored, and the miner can mine out more cryptocurrency.