Instant Load Browser Cartridge brings up the tapecart menu within a second. This browser cartridge is not essential when using Tapecart SD & Tapecart SD+... Without it, just press SHIFT & RUN/STOP and the in-built browser will load in about 7 second.
 
But when using a Tapecart SD device and this cartridge, The main menu loads instantly, giving you access to games and software that loads within seconds.