8-IN-1 IMAC USB ADAPTER - Such iMac USB hub features with 2×USB 3.0 ports, 2×USB 2.0 ports, 1×Type-c port, SD/micro SD card reader, HDMI port, a variety of interfaces to meet your daily use, improve the efficiency of work. This is a nice addition to any 24" iMac. The sleek design of the iMac with no ports or buttons visible on the front of the device is pleasant to look at but it's somewhat impractical. HDMI EXTENSION - With HDMI port, output resolution of 4K@60hz, support for expansion mode and mirroring mode, able to expand your iMac multi-monitor display. Lets you connect to an external monitor and multiple other devices to transform your imac into a fully-fledged workstation. Perform tasks independently on both your screen and on an external monitor.