ESP32 gps tracker wiring

Hardware
1

Hello
i am trying to build a gps tracker so purchased a sim7600g - h
Link gps module and since a sim card is required got a pci-e to USB as well
link below
pci- e to USB
feets perfectly , and based on reviews should work and compatible

According to wiring diagram:
esp32. gps module
RX. ----> TX
TX -----> RX

but there are no lables for TX /RX on the hardware sao i dont know how to wire couldnt find any on datasheet either

can anybody helkp please?
Thanks in advance

2

PCIE is an edge mount circuit card form factor. The TX/RX are pins 19/17 on the card edge.

See page 14 or search "TXD"

3

Thank you for your help
How can you detect pins 17 and 19 (rx Tx)?
By looking at the Pictures taken from data sheet it Says from PIN 1 to PIN 51 while there’s not enough I/o It’s no clear
Photo of PIN OUT diagram attached

IMG_0175
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is there some kind of adaptor which can enable to connect wires to pins w7.19 rx tx
The surface area is tiny (about 1 millimeter)
Makes it hard to solder

4

Counting from pin 1 by twos on the nice diagram you posted, could it make sense that RX and TX would be pins numbered 17 and 19?