Add four USB 2.0 Ports to the back of your computer 4 Port USB Slot Plate Add additional USB 2.0 ports to the back of your computer for connecting external USB hard drives and USB hubs and other USB devices USB slot plate adapter converts the USB pins on your motherboard into four USB-A female ports Supports 4 or 5 pin motherboard connections Compatible with external USB 2.0 hard drives such as WD My Passport / WD Elements / Toshiba Canvio / Seagate Backup Plus and more