Both front and back side can be inserted Easy to assemble Easy to setup Stable and fast As we know that Zero is very tiny, and it does not have standard USB port to connect your standard USB devices, so it may hard to access like other version. Most of you are likely to access Linux OS via SSH service. Our long term goal be to use SSH over USB. This means that we have to configure Raspbian to treat the USB port like an Ethernet port. it can make your zero became a USB stick to your computer, so that you can access your easier than before. It's high qualified and easy to assemble, you can make your Zero became a USB Ethernet dongle in minutes. Colour:As Shown Material:plastic Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Package Contents: 1 x expansion board Only the above package content, other products are not included. Note: Light reflection 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.