These are classic miners from the early days. The G-Blade from GridSeed was a cool miner when it came out, costing almost $2,000. 

Three are available, all in WORKING CONDITION. All accessories available. 2 are black and one is aluminum color - not painted black like the others. This is the factory paint, not painted by a person or again.

They use USB mini connections for each blade. Power supply wiring included. Power supply available upon request. USB mini cables available upon request.

Tested to power on. All work in working condition when unplugged. To run these use a RaspberryPI or similar Single Board Computer. I know I even used these with Windows.

I haven't used these in five+ years but they still appear fully functional.

Condition: Tested to power on, both blades.

Thanks!