diff --git a/content/post/t400-setup/index.md b/content/post/t400-setup/index.md
index b8bbc54..f9e6317 100644
--- a/content/post/t400-setup/index.md
+++ b/content/post/t400-setup/index.md
@@ -25,7 +25,8 @@ Here are the most common mods you can do on a Thinkpad T400
 The Libreboot project provides free, open source (libre) boot firmware based on coreboot, replacing proprietary BIOS/UEFI firmware. I made a guide on how to do that. It's [here](https://bytemeifyoucan.lol/p/my-t400-libreboot-guide/).\
 The Official Libreboot site is [this](https://libreboot.org/). The Thinkpad T400 official page is [this](https://libreboot.org/docs/hardware/t400.html).
 #### Removal of proprietary hardware
-TODO
+After librebooting the T400 any hardware that requires proprietary blobs. In the case of this model you will most likely only need to replace the wifi card. One of the most suggested is the Atheros AR5BXB112 AR9380. It is a 3x3 450mbps WiFi card which works perfectly with free drivers and firmware, it should cost between 10 and 15 euros on Ebay or similar sites.\
+[This](https://h-node.org/wifi/catalogue/en/1/1/undef/undef/yes?) is the complete list of cards approved by the Free Software Foundation.
 ### Quad-core mod
 It is possible to install a series of quad-core processors on the T400, taking advantage of the fact that they have the same socket of the dual-core Core Duos that come with stock machine.\
 You will need some soldering skills and decent amount of patience. A very well done guide can be found [here](https://thonkpeasant.xyz/guides/other/quad.html).\
@@ -34,18 +35,18 @@ The original post can be found [here](https://thinkpad-forum.de/threads/core2-qu
 Cooling mods really do exists out there, even tho I have never tried one on my T400s, considering i have heard mixed opinions about the actual improvements when it comes to the CPU degrees. Mileage may vary.\
 All guides follow more or less the same principle: remove the metal sheeting from the plastic bottom casing and drill holes in the case. Examples of the procedures are [this](https://thonkpeasant.xyz/guides/other/cool.html) and [this](https://www.instructables.com/Fix-a-Thinkpad-T400s-Thermal-Issues-Once-and-For-/).
 ### bluetooth
-the bluetooth of the T400 is 2.1, you can easily upgrade the bluetooth 4.0 by swapping the card located behind the LCD front bezel
-
-TODO: link guide
+The bluetooth of the T400 is 2.1, you can easily upgrade the bluetooth 4.0 by swapping the card located behind the LCD front bezel. Most recommended model is **Bluetooth 4.0 Genuine Lenovo FRU 60Y3305 60Y3303**.\
+More info [here](https://www.thinkwiki.org/wiki/Bluetooth_Daughter_Card_slot).
 ### Ultra-bay mods
-TODO: talk about second drive inside of bay
+The most commond usage for the ultra bay, when a cd reader is not needed, is to use an Hard Drive caddy module to have a second 2.5 inch drive. Parts are easily available for about ten euros.
 I am currently working on a variation of a mod I have seen floating around the world wide web. It's [this one](https://hackaday.com/tag/thinkpad-ultrabay/). In the article the laptop used is the T420 so I changing the 3D printed part to fit the T400 ultrabay.\
 More info and **maybe** a guide will appear in the future, depending on how much time and effor i want to waste on this idea.
 ### Express Card slot
-The T400 Express Card slot allows you to slot in any compatible Express Card 54, i think the most used card is the one that gives you one or two (depending on the model) USB 3.0 plugs, with up to (i think) 5Gbps transfer speed. Cool shit.
-TODO: list possible or at least most commond expansions slots used, link to products
+The T400 Express Card slot allows you to slot in any compatible Express Card 54 and by extension any Express Card 34. One common example is using a card with one or two (depending on the model) USB 3.0 plugs, with up to (i think) 5Gbps transfer speed.\
+Other types of Express Cards can be found scattered around the web, from the classic card reader, to different post extensions to SD readers to even modules for eGPUs with awful performances.
 ### Screen replacement
-TODO
+The T400 has 14 inch TFT LCD display with resolutions of  either 1280x800 or 1440x900. The display backlight is eihter CCLF or LED. Detailed information about the diplays that can be found are [here](https://www.thinkwiki.org/wiki/TFT_display).
+The LED model has a way better screen and is quite rare at this point, few are left on the marked. If you have the change, always go for the LED model.
 ### External WiFi antenna
 Still have to do some research on this to understand if it makes sense or not.
 ### Opensource Battery