This is just the bare PCB no parts are included.. parts list and instructions are available at the link below. The flashrom99 has been replaced with the FinalGROM99 which adds more memory and functionality.

The TI 99/4A Flash ROM Cartridge, or FlashROM 99 for short, is a cartridge for the TI 99/4A home computer that allows for running ROM cartridge images stored on an SD card.

The FlashROM 99 supports ROM-only images of up to 32K that use the write-to->60xx bank switching scheme. It will not work with programs using GROMs or CRU-based bank switching. The cartridge does not require the Peripheral Expansion Box and runs on both PAL and NTSC consoles.

More info at https://endlos99.github.io/flashrom99/