TerraHash is a Silicon Valley based company. We make ASIC Bitcoin Mining Gear using the Avalon ASIC chips made by BitSyncom. We are working on a modular design, and our product line contains the following:

4.5 GHash/sec Board (has 16 chips)

18 GHash/sec Board (has 64 chips)

Complete kits with a chassis, one of more of the above boards, power supply, cooling fans etc.

All the boards can be linked together in a chain, with one board acting as a controller and connected to your computer through USB.

http://terrahash.com