Gray USB hub with USB 3.0, USB-C, and SD card slot. This is the one I used with my previous Mac. I was using it for multi-display setup. I used it without removing the protective vinyl seal, so there shouldn't be any damage to the panel surface. The bubbles are due to the protective seal. Please check the images for any other concerns. I found some tape residue that could be removed by cleaning when packing, but I'm listing it as is, so I've lowered the price. Image 1: The pilot lamp is lit in orange. It will turn green when connected to a Mac and a signal is detected (I'm not sure if that's the correct expression). I used it for several years until three years ago, and there were no problems. After that, I started using something else and stored it in its original box. I will sell it at a low price since I won't be using it anymore. *Excerpt from BELKIN's description below* Connect to any USB-C compatible device with a single cable and achieve all-around expandability. Power can be supplied to this product and connected devices from the included power supply. It is the perfect and essential partner for creators working in various genres such as music, photography, and video, who perform advanced tasks such as editing in home studios and photography studios. Also ideal for iPad Pro, Mac OS, and Windows PC: Compatible with Thunderbolt 3 and USB-C, so you can use it with 2015 and later MacBooks (Retina) and iPad Pro with USB-C ports. Output to dual high-resolution display monitors: You can output a variety of images to dual high-resolution display monitors using the Thunderbolt 3 terminal and Displayport (DP 1.4) terminal. Supports a variety of video outputs: Thunderbolt 3 supports 8K/30Hz single monitor and 4K/60Hz dual monitors. USB-C supports 5K/30Hz single monitor and 4K/30Hz dual monitors.