t1 slotBuild flexibility goes a long way with 2-slot and 3-slot mode for the T1. Here I managed to fit a Zotac RTX 3070 Twin Edge with ease. ... The T1 is definitely one of the mostThe first time slot is numbered 1. For a T1 controller, the time slot range is from 1 to 24. For an E1 controller, the time slot range is from 1 to 31. unframed—Unframed mode