Cables for Western Digital 4 TB for Inspiron 3670 desk top

https://www.dell.com/support/manuals/en-us/inspiron-3670-desktop/inspiron_3670_servicemanual/procedure?guid=guid-935fe882-1f1d-44a3-8b52-07129708f376&lang=en-us

sata hdd need a power cable and a data cable.

both cables connect to 3670 motherboard 

your pc already has sata power cable most likely. It is a 15 pin cable 

check if there is a sata data cable included in the pc.  It is a 7 pin cable.

3670 motherboard diagram 

https://www.dell.com/support/manuals/en-us/inspiron-3670-desktop/inspiron_3670_servicemanual/?guid=guid-00e92321-81fc-4c0b-970d-1da1c0170955&lang=en-us

the sata power ports are #5, 8.  both 6 pin.

the sata data ports are two black, one blue, one white.  use the black or blue one for your new 4TB hard drive.

@redxps630​ 

Thank you for the quick response! I was able to plug in both cables to the 4 TB. I used the blue and black per your advice. However, my computer is not able to recognize the device. I have attempted to update drivers on my BIOS. That does not seem to be the issue.

Re: my computer is not able to recognize the device

this is often because bios>sata operation is set as RAID ON which is Dell default.  If so try change it to AHCI by using the safe mode boot trick here.

https://www.dell.com/community/en/conversations/optiplex-desktops/how-to-safe-boot-after-changing-from-raid-to-ahci/6716d53eb33994192335c92c?keyword=AHCI

Thank you! I had to do some extra steps but I got my big baby set for space.

Thank you so much for the help and quick support. I really do appreciate it.