One of the biggest criticisms of all-in-one PCs is the inability to upgrade hardware if necessary. Lenovo has addressed that issue with its ThinkCentre Tiny-in-One 23, an all-in-one monitor with an open slot in the back in which users can slide certain slim Lenovo PCs. Connectors built into the monitor connect to the PC, which can then be accessed through "wings" on the back of the monitor that expose its various ports. Likewise, a couple of USB ports are offered on the front of the monitor for ease of access, ultimately providing a typical AiO experience. Sound interesting? Read our full SlashGear review to find out!