Asus Transformer Book CHI Mobility. Performance. Beauty The 2-in-1 that lets you have everything you dreamed of Powerful laptop, handy tablet Ideal for work, perfect for play Let's admit it: carrying both a tablet and a laptop is a nuisance. Chi is a 2-in-1, which means exactly what it says — it's a Windows laptop with a keyboard that detaches, turning it into a Windows tablet. Two devices, in one beautiful package. It's a simple idea that's elegant and convenient, too. Need to work? It's a powerful laptop. Time to relax? Detach the keyboard and it's a handy tablet. No fuss, no hassle.