The TE Connectivity 3-87977-2 is a 14-position, dual-row receptacle housing from the AMPMODU Mod IV series. The housing is free-hanging (in-line) and accepts crimp-terminated female socket contacts — you build the wire harness first, then insert the contacts into the cavities.
What You Need to Know About the Contacts
The listing explicitly notes "Contacts Not Included" — this housing ships empty. You must order the mating crimp socket terminals separately. The AMPMODU Mod IV series uses standard TE female crimp contacts (often the 1-87175-0 or similar 22-26 AWG socket). Confirm the wire gauge and contact plating (tin vs. gold) against your application's current and cycle-life requirements before placing the full BOM.