As long as you understand that at such a low hash rate the likelihood of hitting a block is extremely low, the BitAxe ticks all those boxes. I

Just search for BitAxe Gamma online for various distributors. Nerdminer store and others.

I can’t recommend a seller because the place I got mine in Canada took 6 months to get it to me. But I’m sure there’s others that have better availability. BitAxe’s are really for educational purposes only, but there’s always that one chance every ten minutes…..

I grabbed a BitAxe Gamma with a cooling option that has a fan that pulls air sideways on top of cooling fins on top of the chip, rather than sucking air inline through the components. Less likelihood of gumming up the inner workings of the unit with dust.