MSI announced the ProBox line of compact desktop barebones, the first of which is the ProBox23. Its chassis, which measures 202 mm x 204 mm x 54.8 mm (WxDxH), includes a slim mini-ITX motherboard based on the Intel H81 Express chipset, supporting LGA1150 processors (TDP of up to 65W), room for up to two DDR3 SO-DIMM slots, two 2.5-inch SATA drives, and an mSATA slot. A half-height mPCIe x1 slot is also featured, so you can drop in your own wireless communications card. The unit draws power from an external power brick. Connectivity includes stereo HD audio, gigabit Ethernet, two USB 3.0 ports, six USB 2.0 ports (two on the rear panel, four on the front), eSATA 3 Gb/s, and HDMI display output.