All the parts on this sales page are optional. Parts orders placed in different sale batches from the NEO Ergo keyboard will NOT be eligible for free shipping and will be canceled. We highly recommend that you purchase all desired parts together with your NEO Ergo keyboard. Notes: Extra Accessory Pack contains: diffusers (8 gap LED diffusers + 1 decorative LED diffuser), gaskets (4 short + 2 long), case corner protectors (1) and rubber feet (6 white + 6 black). Extra PCBs come with matching daughterboards.  The extra tri-mode PCB includes a PE sheet, a plate foam, and a USB dongle, but does not come with batteries. Shipping is free for extra parts on this page when purchased together with the Neo Ergo. Parts orders without any outstanding unfulfilled Neo Ergo orders under the same account will be canceled and buyers are subject to all the related fees incurred. Plates are compatible with all PCBs.