All-in-one (AIO) computers are becoming increasingly popular, probably because they look good and do save quite a bit of space. Lenovo is probably is looking to capitalize on that trend by announcing its ThinkCentre M90z AIO that packs a 23-inch display, and is powered by Intel’s Core i3 or i5 processors. One of the more notable features of the M90z is the fact that its built-in webcam sports a physical switch to toggle to the camera on/off, giving you some additional privacy when you don’t want someone to be able to check you out. The M90z is currently available and will set you back about $899. Other features of this AIO computer include DDR3 memory, hard drive/solid state drive, DVD burner, and optional Wi-Fi/Bluetooth. Check out a video giving you some insights into the design of the M90z after the jump.