Important It is strongly recommend to use 5.8G wifi AP instead of 2.4G wifi AP, according to the feedback if use the external USB device (like mouse, keyboard, display) or use X857-C3 metal case, the system maybe unstable or not from the SSD. Also pls the new SSD use.X857 V2.0 mSATA adapter only design for 4 Model B(1GB/2GB/4GB/8GB), Supports up to 1TB mSATA interface SSD .How to power RPi 4&X857 V2.0: 5Vdc +/-5%, Powered by for 4 Type-C Power In portMatching metal case for RPi 4&X857 V2.0&X735/X708, pls refer to X857-C3 Case, note the power control switch should be connect to X735/X708, there is no PWR port for external power switch on X857 V2.0.colour: blackMaterial: plastic + metalPackage Contents:1 x X857 V2.0 mSATA SSD 1 x USB3.1 jumper6 x Screw M2.5x6mm4 x M/F M2.5x7+6mm4 x F/F M2.5x9.5mmOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.