I have only one hdmi port on my tv and no usb.I also have a roku! can I somehow hook the hdmi and the usb from the roku into


You can use an HDMI switcher splitter, like this one from Amazon. Plug the single end into your TV, the other devices into the end with the 3 HDMI ports, and it automatically switches to the correct port depending on which device you turn on. I've used it for years without any problems when I had an older single HDMI port TV. I'm assuming your Roku box has a USB port on it, it will work through the Roku.