Many people complaining about the gas but why not look at the bigger picture? It is a temporary issue, relax people....

The new fork will excludes the asics?

precisely eth. the asic, type innosilicon A10 etc, are they configured for pos or will they become useless?

POS (proof of stake) is totally something else, there isn't any algo to mine through computing power (No GPU, no ASIC, nothing) anymore. You put your ETH "at risk" (and you get rewards) while validating Txs. By risk I mean that if you try to cheat, behave as a bad actor...While validating Txs, you'll lose your staked ETH as a punishment. You'll need 32 ETH bo be a "miner validator".

yes but i think will be hybrid POS/POW.

https://cointelegraph.com/news/eth-miners-will-have-little-choice-once-ethereum-20-launches-with-pos   according with the documentation of the casper upgrade the network will support an hybrid model pow pos

changed. true

Can someone explain how the POW component of Ethereum will work once it transfers to a POS?

Nvidia has just released new 50% more effective video cards series 3000. Amd is expected to answer with cheaper cards at the end of October.  Both companies are very interested in Ethereum mining profits, so may be a big pump is coming in the next months? POS is not needed now - Defi is working well and there are too many problems to be solved before the transition to full POS is done. It is at least 1.5 year away, if everything is going well and phase 0 (which is a hybrid POS and POW) starts in 2021. This is not highly probable, so we may expect more delays - 2-3 years may be.