Would this barrel jack splitter let me use one laptop charger instead of two?

[adragoncalledgeorge]

Hello,
I have a DIY portable PC project that will not accept an ATX psu because it is an ultra small form factor. I plan to use the following pico psu to power my CPU/motherboard/ram and ssd. I will use the Noctua Low Profile NH-L9i to cool my Ryzen 2600 (non OC).

https://www.amazon.co.uk/Mini-Box-picoPSU-160-XT-Power-Mini-ITX-Supply/dp/B005TWE6B8/ref=sr_1_1?ie=UTF8&qid=1540634203&sr=8-1&keywords=pico+psu

Then I will use this eGPU dock to power my GTX 1060 3gb:

https://uk.gearbest.com/laptop-accessories/pp_229101.html?wid=1433363&currency=GBP&vip=14752948&gclid=CjwKCAjwmdDeBRA8EiwAXlarFkUpdPx3ReuvIf9y1Y9FMvjkXpzDLNn0KF781ANCFTA3DUaEjfQcPBoCR-AQAvD_BwE

The trouble is that would mean carrying around TWO laptop power supplies and I was at first going to use a 150 watt laptop power supply like this one: http://www.chargers-pc.co.uk/hp-ac-adapters-c-51_1/original-150w-adapter-charger-hp-ed519aaaba-hstnnha09-cord-p-11347.html

However instead of that I want to use one Dell 330 watt laptop charger like this: http://www.chargers-pc.co.uk/dell-ac-adapters-c-51_5/original-330w-adapter-dell-alienware-x51-i74770-i73770-cord-p-18336.html

The eGPU dock accepts DC-DC power supplies so I was thinking of using a two-in-one DC adaptor like this one: https://www.kenable.co.uk/en/cctv-security/cctv-cables-reels/6988-kenable-dc-power-splitter-4-way-adapter-21mm-cctv-12v-psu-to-4-camera-cable-006988-5055383469888.html?gclid=CjwKCAjwmdDeBRA8EiwAXlarFpxUAkhznNIx8ROGJ3xPwYOw7EzTPW7LpuuWeDOV1MHUJLink5QeLxoC_p8QAvD_BwE

That would cut down on the amount of external accessories and mean I wouldn't have to do any sketchy soldering or anything. Would that work fine? The GTX 1060 3gb only uses 120 watts max and the Ryzen 2600 is a 65 watt CPU so I am well within a 300 watt power limit.

I would only use one SSD maybe a second m.2 ssd later on for a boot drive and additional storage. This would be for an ultra portable gaming PC that has to be very small and light to fit in a backpack since I travel a lot.

I already have the CPU cooler, graphics card, and SSD. I was planning on upgrading to Ryen in the near future and was going to go Mini ITX anyway and I have a shielded PCIE extension cable for the graphics card to lay it flat.

Any thoughts on this build?

 

[Aeacus]

That eGPU dock doesn't happen since you'll run out of PCI-E power connectors with it. Even while you may bypass it's 8-pin and 6-pin PCI-E power connectors it has (since those are for standard PC PSUs) with your 12V round DC input, your GPU also needs at least 1x 6-pin power connector (e.g my GTX 1060 3GB uses 1x 8-pin power connector).

While the standard ATX PSU is too big for your system, why not use much smaller SFX PSU, e.g Seasonic Focus SGX 450,
specs: https://seasonic.com/focus-sgx
pcpp: https://pcpartpicker.com/product/V3ndnQ/seasonic-focus-sgx-450w-80-gold-certified-fully-modular-sfx-power-supply-ssr-450sgx

or even flex-ATX PSU? E.g Seasonic Flex M1U,
specs: https://seasonic.com/m1u
review: http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=277
amazon.uk: https://www.amazon.co.uk/Seasonic-SS-350-M1U-350W/dp/B0074FRVNS

With Seasonic Focus SGX 450, you can plug your GTX 1060 3GB directly to the MoBo since it has the needed PCI-E power connectors. Though, with Seasonic Flex M1U, you can't use GPU that needs extra power since it doesn't have PCI-E connectors for GPU, just like your pico-ATX PSU. With flex-ATX PSU, you can use this low profile GTX 1050 Ti which doesn't need additional power,
pcpp: https://pcpartpicker.com/product/Hnhj4D/msi-geforce-gtx-1050-ti-4gb-video-card-gtx-1050-ti-4gt-lp