I like that it’s inside a 3U format, so I am able to rack it with my existing layout. I confirmed serial numbers with Bitmain, and they matched legit manufacturing batches. Can’t recommend this miner sufficient. The shop can be super Qualified—they answered each and every pre-sale issue clearly. https://paxtonpiwna.bloggip.com/39644904/how-to-buy-bitmain-antminer-l9-with-confidence