More in depth notes regarding NX-3155G-G7 & NX-3155G-G6 Dynamic Visio shapes.
While NX-3155G-G7/G6 front-view shapes are as easy to use any other dynamic shapes, mixing NICs and GPUs with NX-3155G-7 and NX-3155G-G6 rear view shapes has added some complexity.
You might save some headaches by checking this documentation before trying the NX-3155G-G7 and NX-3155G-G6 rear-view shapes, if you opt to NOT to use automated placement of NICs/GPUs and decide to place them manually. Even more so than with NX-3170-G6.
In dynamic / automatic mode NX-3155G-Gx rear view shapes are as easy to use as any other dynamic shape and should not cause any headaches.