Usb8x is a Flash application for the TI-84+ and TI-84+SE graphing calculators. It is a driver that interfaces with the calculator's built in USB On-The-Go port, allowing developers to easily create their own USB device drivers for use on the calculators.

An odd glitch involving msd8x and a cable that I didn't attach anything to. I'm using an 84+SE with OS 2.43 and boot code 1.00.

TI-84 Plus series - Wikipedia
The TI-84 Plus is a graphing calculator made by Texas Instruments which was released in early 2004. There is no original TI-84, only the TI-84 Plus and TI-84 Plus ...