The NES-101 model of the Nintendo Entertainment System (informally known as the NES 2, the "top loading" model, or simply the "top loader") is a compact, top-loading redesign of the original Nintendo Entertainment System control deck and game controllers released by Nintendo in 1993.
Nintendo marketed the NES-101 model as the Nintendo Entertainment System Control Deck, exactly the same as the original NES-001 model, only with a "new design" logo on the packaging. It retailed in North America for US $49.99 (equivalent to US $75.00 today). This was at a significantly lower price point than the already released Super Nintendo Entertainment System. The NES-101 model is stylistically similar to the HVC-101 model of the Family Computer, which was released in Japan at roughly the same time, but differs in a number of its specifications.
Source: Wikipedia, "Nintendo Entertainment System (Model NES-101)", available under the CC-BY-SA License.