Features: Brand new and high quality Argon 40 chose an aluminum Case around for RaspberryPI to provide additional functions for RaspberryPI. The Argon One M.2 of the Argon One series, it looks exactly the same as other Argon box, but some of you will notice that it is slightly taller. Argon One M.2 has a plastic lifting base, where we found an M.2 SATA to USB board, which provides an SSD interfaces to enable our RaspberryPI to boot from the SSD. The aggressive lines on the top of the aluminum chassis provide a sleek aesthetic for the relatively large chassis. All of our usb ports and ethernet are facing back. your RaspberryPI 4 will have two full-size HDMIcompatible ports, a USB C port and headphone port. On a plastic lifting base, we see an additional USB3.0 port, which is used to connect the internal M.2 SATA drive to the RaspberryPI USB. Specifications: Material:Aluminum Alloy Type:Basic /128G/512G Size:Approx.9.5x10.6cm/3.74x4.17inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Aluminum Case