4tb hard drive only shows 16745mb

I have a new 4tb hard drive I'm trying to install as an additional drive but it only shows 1.6tb now matter which computer (I have tried it on three different computers ranging from window 7 to windows 10) I try to format it on. Need advice

Welcome to the forum. How have you set up the disk is MBR or gpt can you post a screenshot from disk Management so we can see

i don't know how to send a screen shot. Can you fill me in as to how.

You can copy and paste or the tool bar in the thread next to the world with x is a icon to add photo