What is the difference between part numbers SMARC_CAR and SMARC_CAR_BRD

Our Universal SMARC Carrier is orderable both as a standalone carrier board (SMARC_CAR_BRD) and as a kit (SMARC_CAR) complete with power, data, and antenna cable options. 

• The part # SMARC_CAR option includes:
• 1 x SMARC_CAR_BRD  (Main Carrier board that SMARC SOMs plug into) 
• 1 x 5V Power Supply (USA plug connector only) 
• 1 x DB9 Serial Cable 
• 3 x EFB2471A3S-10MH4L (Tri-Band Wi-Fi Antennas) 
• 2 x 001-0021 (Dual-Band Wi-Fi Antennas) 
• 1 x Insert Card 

The part # SMARC_CAR_BRD is also purchasable on its own and this is the main carrier board. 

PLEASE NOTE – neither of these 2 part numbers include either a Nitrogen or Tungsten SMARC, they are purchased separately to meet the needs of your application.