Computing tab and crystallisation crucible

GT Changelog says
[CHANGED] The First Tier of Crystallization Crucible now uses a Quartz Crucible in its Recipe instead of Iridium.
You are too kind.
And how to use the blocks from creative tab named Computing?


Are you talking about the USB and HDD casings? Place those adjacent to something that takes USB Sticks as Recipe, then place a USB cable in the Slot where the USB Stick would go, i think you need to configure a Side to that Cable somehow, or maybe not, anyways it will then try to pull Recipe data from the adjacent USB Hub or HDD using the Mode Selector Cover you placed on said USB Hub or HDD. So you basically can control which Recipes are done using Redstone by using this.