FCC Part 15 approvals[1] cover all electronic devices, not just those that intentionally emit electromagnetic radiation. All computer equipment still needs approval before it can be sold to ensure that it doesn't unintentionally radiate excessively or in bands that can interfere with other equipment, and that it will still operate correctly when subjected to radiation from other equipment.<p>Further, the non-GSM iPad has WiFi, which brings it under the FCC approvals for wireless transmissions in unlicensed spectrum.<p>[1] <a href="http://en.wikipedia.org/wiki/Title_47_CFR_Part_15" rel="nofollow">http://en.wikipedia.org/wiki/Title_47_CFR_Part_15</a>