SSD to inspiron 5567

as optical drive has 1.5GbPs sata lane . I'll put my existing drive (5400rpm) there then put SSD to the internal port with 6Gbps sata3. Any other thing to consider ?

Not really, the HDD speed is immaterial if used for storage. And the SSD should be pretty simple to setup.

I have upped my RAM from 8 to 16GB and am now looking at that slow 1tB Hard disk drive.

The HDD interface in the Dell 5567 is SATA 3. SATA 3 has 15 power pins and supplies 3V 5V & 12V.
https://laptopmedia.com/highlights/inside-dell-inspiron-15-5567-disassembly-internal-photos-and-upgrade-options/

The Optical drive has a SATA 1 slimline which supports up to 150MB/s transfer rate. This has only 6 power pins and supplies only 5V.
https://en.wikipedia.org/wiki/Serial_ATA#Slimline_connector

But the Western Digital Blue WD10JPVX 1TB HDD in my Dell only uses 5V.
https://media.flixcar.com/f360cdn/Western_Digital-2937937761-eng_spec_data_sheet_2879-771437.pdf

So maybe some HDDs do not get enough current to spin up the disk.
BTW the caddy is not just there to hold the new drive. It needs to convert the drive SATA 3 plug to the motherboard SATA 1 socket.

My plan is to move the HDD to the optical drive slot.
No point in trying to put an SSD in the optical drive caddy when SATA 1 only has a 150MB/s rate.
An SSD is rated at three times that I/O rate.

But the HDD has a transfer rate of around 70MB/s so the the SATA3 should be speedy enough.
https://hdd.userbenchmark.com/SpeedTest/3140/WDC-WD10JPVX-22JC3T0

So I will buy a 500GB SSD and use that as the primary boot drive.
The old HDD will go in the optical drive caddy and if it works it will be a bonus.

I will let you know how it goes.   80)

Desktop SATA drives require both 12v and 5v. Laptop SATA drives only require 5v. While the power connector is the same between the two (except for the laptop's optical drive bay), laptop drives don't utilize the 12v line, leaving those pins unused. The smaller SATA connector found in laptops is strictly for 5v devices, usually for optical drives.

I would buy a USB 3.0 hard drive enclosure and install the original hard drive from your computer in it. This will ensure that transfer speeds are optimal. An enclosure is also nice if you don't plan on using the drive often (ex: as a backup), and helps increase battery life without it unnecessary spinning away. Plus, this makes the drive portable so that you can connect it to other computers.

Hello! Dell 5567 user here as well. I was wondering how the HDD to Optical drive is going for you as I'm about to do the same thing since I'll upgrade my laptop with an SSD. Does it have setbacks when it comes to power? I read that the power supplied to the optical drive is not enough to run the HDD. I hope it's not the case for the Dell 5567. Thanks in advance!

Hey, did you perform the upgrade?

I am also planning to upgrade my dell 5567 in a similar way.

Can you give any tips or valuable information about what you experienced?

Which ssd is best for this laptop?

I did this a few weeks ago.  The hardest part was removing the base,  watch some videos first. 

Installed SSD & moved old spinning Seagate 2TB drive to a caddy in the ODD bay. Both working perfectly with no issues,  I just wish I'd done this much sooner.  Haven't moved the cosmetic fascia of the DVDdrive to the caddy,  wanted to check it was fully working first; that may also be fairly tricky.

Also fitted a new battery which was the main reason for opening it up. 

@Martinodv​ How did it go in the end? Which caddy did you use for the HDD and did it come with a converting connector to allow it to attach to the motherboard?