CircuitCo:Extended Proto Cape Manufacturer Part No EXTENDED PROTO CAPE FOR BBB Descriptions The Extended Proto Cape provides more prototyping area for the BeagleBone Black. Users can still have access to the extra areas on each side of the BeagleBone Black's expansion headers even when another cape is stacked. Signals from the expansion headers are also broken out to edges of the PCB. Specifications Followings are some specifications of the Extended Proto Cape: Mechanical Specifications Size 3.950" x 2.825" Layers 2 PCB Thickness .062" RoHS Compliant Yes