We are is Reference Designer. We are a Massachusetts based company specializing in hardware specially the Raspberry Pi.
We offer a wide range of products. You can buy them at: http://referencedesigner.com/blog
-HubPiWi Blue : A 3 Port USB Hub for the Pi Zero with WiFi and Bluetooth.
-HubPixed: A 4 Port USB hub that connects to the Pi Zero using pogo pins
-Spartixed: Spartan 6 Evaluation Board with USB Cable -