[Fridolf]

Originally Posted by knc1

Sticky: "Where do I start?" ->
Prefix Index ->
Hardware:Serial Port ->
Serial Port Information ->
1v8 serial adapter level shifter ->
https://www.mobileread.com/forums/sho...d.php?t=162775

Which is a level shifter that allows use of 3v3 (or 5v0) adapter with the 1v8 Kindle ports.

- - - - -

But until the MicroFTX card is available (again) . . . .
http://www.ftdichip.com/Products/Cab...BTTLSerial.htm

FTDI has a number of distributors, world-wide, from which you can order the ::
TTL-232RG-VREG1V8-WE (internal reference) or
TTL-232RG-VIP-WE (external reference) adapter cable.
(Hint: just google the desired part number above)

What is the practical difference between those two cables? My guess is that TTL-232RG-VREG1V8-WE only needs to be soldered to three points at the motherboard and the TTL-232RG-VIP-WE needs a fourth point (1.8V) but I wanted to be sure before ordering. I'm choosing between one of those FTDI cables and this one: USB-A UART Bridge CP2104