On the right end of the tablet is one of its most important hardware features: a standard USB 2.0 port (above left). This lets you connect a mouse, a keyboard, a card reader, a thumb drive, and any other USB device you might already have lying around, without configuring anything or needing an adapter. Microsoft has set up a Windows RT Compatibility site where you can see and comment on devices' compatibility. I was able to use a mouse, copy files from my digital camera's SD card, and copy files to a USB drive with no problems. That smaller port to the right of the USB port? That's a micro-HDMI port for streaming high-def video to your flat-screen TVs and other HMDI-compatible devices. Not shown is one of the tablet's two speakers.