Due to the high demand of Zero4U, we have to manufacture this product faster. We made a new revision of Zero4U, which modified the layout a little bit, and use the SMD version of  XH2.54 connector and 12MHz crystal. Hence these two components do not need to be soldered manually, and the assembly can speed up a lot. The figure below shows the different between the two revisions:

rev2_vs_rev1As you can see, the XH2.54 connector has been moved to the right side, and the IC and crystal are moved to the center now. All USB ports and pogo pins are not changed. The sizing, functionality and pricing of the device are the same between two revisions.

We have the new revision in stock. If you order Zero4U (for V1.3) now, you will get the new revision.