2017 New BMW K+Dcan cable with switch vs. Old INPA Dcan cable

OBDEXPRESS nowadays release the newest BMW INPA K+Dcan cable with switch and FT232RQ chip, which confused some customers. Here is the comparison of 2016 new and old K+Dcan cable.

     2016 NEW K+Dcan interface   vs.     OLD Dcan interface
old-new-k+dcan-inpa-cable-switch-1
Both BMW INPA K+CAN cables can:
1. Read and delete errors
2. Adaptations
3. Driver programming
4. Applu coding

Free Download: BMW INPA K+CAN Software

new K+DCAN cable (US$18.15):
1- new switch
k+dcan-inpa-cable-switch-2
the switch on this cable to LEFT is for 7 pin, to RIGHT for 8 pin
8 pin for K-LINE communication (old DCAN cables cannot do it) for BMW from 1998 to 2008

2- new PCB
with FT232RQ chip
k+dcan-inpa-cable-switch-pcb-3

k+dcan-inpa-cable-switch-pcb-4
the printed circuited board of better quality than the old one

old k+dcan cables (US$14.19):
1- No switch
2- only D-CAN for
– E60, E61 od 03/2007
– E83 od 09/2006
– E81, E87 od 03/2007
– E90, E91, E92, E93 od 03/2007
– E70 (new model X5)
– R56 (new model MINI)
3- Old PCB of good quality
with FT232RL chip
K+DCAN cable-pcb board-5

K+DCAN cable-pcb board-6
Customer review – “Warning for bad K+DCAN cable
I can’t help complaining the bad K+DCAN cable I used before. It was burned, you know.
Typical terrible Chinese layout PCB design. In fact it has fresh burn marks on it making me pretty sure an arc from those is what took out the cable. If I end up with another one I will cut those back and cover in hot glue or something to isolate from the FT232 chip. Pic below doesn’t quite do justice to how burned that thing looks in person.

The big device they use turns out to be an L7805V voltage regulator. Without getting into reverse engineering their schematic I’m guessing they have something setup very inefficiently so it is shunting tons of current to generate the 5V but I dunno.
BlownKDCAN-7
Here’s (not much but a little) better shot of how burnt the poor FT232 chip is… blurry but you can see the discoloration…
BlownKDCAN-8
Well… Had better to buy a new one.
I must say, I am the lucky dog. Get the great one you see.
BMW INPA K+CAN FT232RL-pcb-9 BMW INPA K+CAN FT232RL-pcb-10
Very fine work, and bridged soldering of 2 pins is intentional.

A successful purchase in China I think.

Ps. The new with good PCB site:
http://www.obdexpress.co.uk/wholesale/new-bmw-inpa-kcan-with-ft232rq-chip-with-switch-expressuk.html
BMW-INPA-K-Dcan-With-Switch-11

Share