From 0ea10d6165355884b8d5153adf1eb1c0ddc6a72d Mon Sep 17 00:00:00 2001
From: Douglas Urner <4495780+DouglasUrner@users.noreply.github.com>
Date: Fri, 1 May 2020 17:40:31 -0700
Subject: [PATCH] Update README.md

---
 README.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 73035b75..bea23a78 100644
--- a/README.md
+++ b/README.md
@@ -117,7 +117,7 @@ Since the kernel developed in the tutorials runs on the real hardware, it is hig
 get a USB serial debug cable to get the full experience. The cable also powers the Raspberry once
 you connect it, so you don't need extra power over the dedicated power-USB.
 
-- I use a bunch of [these serial cables].
+- I use a bunch of [these USB-to-serial cables] (amazon.de), another option is the Adafruit [USB to TTL Serial Cable - Debug/Console Cable for Raspberry Pi].
 - You connect it to the GPIO pins `14/15` as shown below.
 - [Tutorial 6](06_drivers_gpio_uart) is the first where you can use it. Check it out for
   instructions on how to prepare the SD card to boot your self-made kernel from it.
@@ -128,7 +128,8 @@ you connect it, so you don't need extra power over the dedicated power-USB.
 
 ![UART wiring diagram](doc/wiring.png)
 
-[these serial cables]: https://www.amazon.de/dp/B0757FQ5CX/ref=cm_sw_r_tw_dp_U_x_ozGRDbVTJAG4Q
+[these USB-to-serial cables]: https://www.amazon.de/dp/B0757FQ5CX/ref=cm_sw_r_tw_dp_U_x_ozGRDbVTJAG4Q
+[USB to TTL Serial Cable - Debug/Console Cable for Raspberry Pi]: https://www.adafruit.com/product/954
 
 ## 🙌 Acknowledgements