You're not going to find one.
USB and PCIe are two very different technologies supported by the PCH (Platform Controller Hub) in the chipset of your PC/Server.
The I/O portion of the PCH supplies both PCIe and USB interfaces to the system. However, PCIe being an expansion bus allows you add additional USB controllers to the system; the USB interface doesn'...
These small splitters should be avoided at all costs. As Benson Leung's post explains
There are no active components inside. It bridges many pins (power, data, gnd, cc) among the three USB-C connectors). What this means is that your phone or laptop can negotiated much higher voltage than vSafe5V, and that will just magically show up on the other USB-C ...
This is probably not going to work.
The mini pcie card can supply a peak power of 3.3V at 1A.
From what I can find an mxm gpu always needs more power than this and unlike a normal gpu it has no external connections.
What you are looking for is either a direct Multi-Drop to USB converter or a Multi-Drop to RS232 converter which can then be converted to USB. As far as I know Android exposes the serial port API. There are many such devices, one example would be this.
So there's still the unknown of why a Dell 45W USB-C charger did not work on a Dell machine. Given your measured power draw, it might be that your machine doesn't support that charger without some firmware update or just doesn't support charging via USB-C. Maybe try some other USB-C laptop chargers (45W+) you can get a hold to see if they work. For this ...
Well let me be the one to answer my own question. I found a working adapter! It allows to pd charge my phone and have a USB c port left for other peripherals.
This adapter https://nl.aliexpress.com/item/2-in-1-Snelle-Lading-Headset-Adapter-Type-C-USB-C-3-5mm-Digitale-Audio-Kabel/32961645430.html?spm=a2g0s.90423188.8.131.52b6a4c4d82wJiw 
from AliExpress is ...
There isn't a device which allows a 3.5" floppy drive to read off of Flash memory, simply because the drive itself works through the traditional mechanical means of its media. Such a device would be similar to a car tape-deck adapter for a CD player, and would be prone to failure anyway.
There are many, many devices like this one which will allow you to ...
You would need a motherboard bridge adapter such as the following IDE to SATA Adapter:
3.5" HDD IDE/PATA to SATA Converter Add On Card Adapte for IDE 40-pin hard drive disk,DVD Burner to SATA 7pin Motherboard - Newegg.com
File:IDE-SATA ADAPTER.jpg - Wikimedia Commons
Get a passive Mini DisplayPort to HDMI cable, like this one
As SiXandSeven8ths mentioned, DisplayPort++ (also known as Dual Mode) is a technology that allows DisplayPort to put out another signal for use with passive adapters. While limited because of this unidirectionality, it's an incredibly cheap, easy, and effective solution for what you're trying to do....
Possible? Yes. Desirable or functional....now that's a question.
Your motherboard only supports IDE/PATA connected drives. This is the traditional "ribbon" cable connection. This means you will need an IDE/PATA cable-connected drive, like this one:
Please note that the ...