Inside it looks modular, with room to expand to a fourth ASIC unit. Xbox controller shown for size reference. PSU is Antec, no other visible labels on the PSU.
Some custom controller boards visible under the wrapped cables, e.g. "PDU v1.2 by ngzhang"
No wifi antenna included. No paperwork or instructions. Power cable is for Chinese "I-SHENG" power outlets, not American. Easy oversights if someone is rushing to ship it, I suppose :)
One hopes the PSU is auto-switching.