iFixit points out that these models are similar in design to what Apple did with the iPhone 4. The CDMA has no SIM slot, and the CDMA version packs on additional antenna.
Like the GSM iPhone 4, the GSM iPad 2 packs Infineon and Broadcom chips while the CDMA version uses a single Qualcomm radio.
Be sure to click through to the iFixit page for lots more details and some nice photos of what has to be one Apple’s simplest product designs.
Article Via TUAW