The product you're describing is likely an 8-in-1 USB Type-C to HDMI adapter or cable, packaged in a black and yellow box. It's designed to connect devices with a USB Type-C port (such as laptops, smartphones, or tablets) to an HDTV or monitor with an HDMI input. This type of adapter usually offers multiple ports in addition to HDMI, such as USB-A, USB-C, Ethernet, SD card slots, and more, providing users with versatile connectivity options.

An OTG (On-The-Go) adapter for Apple devices is a handy tool that allows you to connect USB peripherals like keyboards, mice, and flash drives to your iPhone or iPad. With this adapter, you can expand the functionality of your iOS device by connecting it to various USB accessories, making it more versatile and convenient for tasks like file transfer, typing, or connecting other USB-enabled devices. It's a great accessory for those who need more flexibility and functionality from their Apple devices.