never mind the black vs white triangle labelling inconsistency.  it is the 1 and 2 that should be consistent.  antenna 1 is aux and antenna 2 is main as seen on both your pic. the way that the antennas are designed is for the MAIN antenna to handle WiFi and the AUX is intended for WiFi + BT functionality.  Antenna 1 (AUX) : Wi-Fi + BT Antenna 2 (MAIN) : Wi-Fi PS Usually the colored cable (blue or black) is the main antenna to the wifi card. The white cable tends to be the auxiliary (backup) cable.
I own an Dell Inspiron 3670 with an Intel Wireless 9462 1x1ac + Bluetooth 5.0 (802.11ac + Bluetooth 5.0, 1x1) card. I would like to replace this card with the Intel 9560 2x2ac + Bluetooth 5.0 (802.11ac + Bluetooth 5.0 2x2) card as identified in the Dell Setup and Specification information. My question pertains to the antenna / antenna connection on the 9560 card. I have found plenty of the 9560 card that meets the criteria. What is confusing is the connection lead to the card. The cards identify one connection as “Main” and the other as “Auxiliary”. The confusion is how the Main and Auxiliary are identified. Some of the cards have the Main identified with a black triangle and the Auxiliary with a white triangle whereas other cards are reverse – Main with white triangle and Auxiliary with black.  I believe the respective color triangles refer to the color antenna lead wire to be connected. I am trying to figure out which is the correct color combination is correct – Main (black triangle) & Auxiliary (white triangle) or Main (white triangle) & Auxiliary (black triangle).   [IMAGE]                [IMAGE]    
Inspiron 3670 Wireless Card