Which devices will be supported to mine?

[vanphandinh]

NRG uses Distances (Cosine) for hash-smashing combined with SHA256 and Blake 2BL to conduct mining. A CPU miner will be released for the mining soft launch followed shortly by GPU.

Can i use ASIC?

[GSBE]

when will that be?

[Simon0x]

GPU (BEAMX1) miner (followed closely by browser, ARM, and ASIC) https://docs.blockcollider.org/docs/pre-post-target-mining

Here you can read more about the supported mining devices and when they are supported.