External SSD only able to work after plugging it in after boot up

[opforcej]

A few days ago, I had an issue where my external SSD was not being recognized. I noticed after I boot up my computer is when I can plug it in and if I have to turn off my computer, I have to unplug it and wait to boot then plug it in for it to work. It's the Samsung 1 TB T3 SSD. I have it connected via USB C to USB C. Waiting for a USB 3 to C to try the connection on a different port. It was working just fine when I got my computer. It's the MSI GT62VR.

 

[ArtPog]

Not having worked with that Samsung USB external SSD, I really don't have any insight into the problem you're experiencing, but out of curiosity it was my impression that device was equipped with a USB 3.1 Type-C connection port and a USB Type-C to Type-A cable. Is that not so?

If so, what prevents you from connecting the device to one of your laptop's USB 3.0 ports? (I'm assuming, of course, that the laptop is equipped with USB Type-A ports.)

 

[opforcej]

Not having worked with that Samsung USB external SSD, I really don't have any insight into the problem you're experiencing, but out of curiosity it was my impression that device was equipped with a USB 3.1 Type-C connection port and a USB Type-C to Type-A cable. Is that not so?

If so, what prevents you from connecting the device to one of your laptop's USB 3.0 ports? (I'm assuming, of course, that the laptop is equipped with USB Type-A ports.)

My computer has three USB 3 ports and one USB 2. Also has the USB C Connection. My External SSD came with a USB C to USB 2 or 3 (can't remember which) but I'm not sure what I did with it and as stated before, I do have a USB 3 to USB C cord coming in the mail tomorrow to test it out. My External SSD only has a USB C connection to it. If I did hook it up to my USB 3 port, it still wouldn't solve the issue of why my USB C port isn't working correctly. And from what I hear, USB C is the fastest for USB connection.

 

[ArtPog]

No doubt you'll be pleased with the transfer speed generated by your Samsung external SSD, however I would just comment on your final comment that from what you hear, "USB C is the fastest for USB connection".

But first of all, your Samsung external SSD is *not* a USB 3.1 Gen 2 device; rather it is a USB 3.1 Gen 1 device. As a practical matter it's a USB 3.0 device.

The naming conventions associated with "USB 3.1" are a study in confusion and many would say outright misrepresentation. It’s an absolute disgrace for consumers, since because of this new USB naming convention most consumers will have no idea that there can be no difference whatsoever re speed between a device advertised as USB 3.0 and another device advertised as USB 3.1.

Understand that USB 3.0 data transfer speed is 5 Gbps.

The new designations for USB devices (as promulgated by the USB Implementers Forum) are...
USB 3.1 Gen 1 and USB 3.1 Gen 2

USB 3.1 Gen 1 speed is 5 Gbps - NOTE IT IS THE IDENTICAL SPEED FOR WHAT WE HERETOFORE TERMED USB 3.0
Supposedly manufacturers are encouraged to use the designation "SuperSpeed USB" for these 5 Gbps devices.

USB 3.1 Gen 2 data transfer speed is 10 Gbps
Supposedly manufacturers are encouraged to use the designation "SuperSpeed USB 10 Gbps" for these devices.

So when you see a USB device (flash drive, USB external drive, etc.) advertised as "USB 3.1" it's a virtual certainty that device is what we formerly called a USB 3.0 drive. Only when it's specifically designated as a "USB 3.1 Gen 2" device can you be assured it's what we would ordinarily call a USB 3.1 device.

We have been using a Z170 system with USB 3.1 Gen 2 docking station & a USB 3.1 Gen 2 enclosure over the past few months. We estimate a speed gain of roughly 10% - 20% (depending upon data) with these devices as compared with USB 3.0 (USB 3.1 Gen 1) devices.

Virtually all our experience with these "true" USB 3.1 devices was with a Type-A connector since the motherboards we were generally working with were equipped with only that USB 3.1 connector. I do recall we worked with one motherboard that also had a Type-C connector and we found no difference between that connector and a Type-A one speed-wise. I spoke with a number of technicians who confirmed our findings.

(I assume the preceding also applies to Macs but I've no experience with that system.)