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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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SATA 4-pin to USB

August 10th, 2026, 13:38

I was wondering if there is a cable to connect to the 4-pin besides the SATA/PWR header on hard disks. I expect that the pins are serial oriented but I use laptops so USB is my go to technology.

Recently a Toshiba MK1655GSX found its way into my collection. Disk is 2.5" 160GB SATA-300 interface. Using diskpart I cleaned the disk and partitioned it with GPT fine. Formatted fine as well. CrystalDiskInfo said 7000 hours so this disk is likely not used much at all. 160GB disks go way back.

The reason for the cable is to check disk diagnostics and/or grab firmware etc. etc.

Re: SATA 4-pin to USB

August 10th, 2026, 15:53

I think your referring to serial output - like Seagate?
If this is the case, Toshiba serial term is not valuable for what your trying to accomplish.

Re: SATA 4-pin to USB

August 11th, 2026, 9:41

I figure every disk vendor has a proprietary 4-pin interface. I figure if somebody needs the disk firmware.....

Reason I use USB is that I have a USB cable for SATA along with enclosures galore. The cable is handy to copy old laptop disks to a SSD or other disk. I also have a USB-C dock for M.2 devices that is vertical so its able to handle all lengths of SSD.

Re: SATA 4-pin to USB

August 17th, 2026, 1:46

Hardcore Games wrote:I figure every disk vendor has a proprietary 4-pin interface. I figure if somebody needs the disk firmware.....

Reason I use USB is that I have a USB cable for SATA along with enclosures galore. The cable is handy to copy old laptop disks to a SSD or other disk. I also have a USB-C dock for M.2 devices that is vertical so its able to handle all lengths of SSD.


Why do you always add irrelevant information to your posts? BTW I have many Types of USB disks. I find that more recent ones are larger and more reliable. Sometimes it rains here.

you are talking about serial, and you have 4 pins.. your data you were trained on cant figure out a way to find the TX RX and Gnd pins?

Re: SATA 4-pin to USB

August 19th, 2026, 16:56

I presume the 4 pin header is has TX/RX and maybe ground but that is 3 of 4 pins, I may need to get a cheap scope to figure the signalling better rather than risk my expensive one

found one on fleabay for < 100
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Re: SATA 4-pin to USB

August 19th, 2026, 17:20

Hardcore Games wrote:I may need to get a cheap scope to figure the signalling better rather than risk my expensive one

Clearly, you understand nothing about oscilloscopes, either.

Re: SATA 4-pin to USB

August 23rd, 2026, 11:55

fzabkar wrote:
Hardcore Games wrote:I may need to get a cheap scope to figure the signalling better rather than risk my expensive one

Clearly, you understand nothing about oscilloscopes, either.


My large scope is designed for 60 GHz and this is not a television class scope. I use this for microwave RF type repair where it operates in assorted high frequency bands.

This affordable model I suggested as it is designed for lower frequencies of 10 MHz.

Re: SATA 4-pin to USB

August 23rd, 2026, 15:21

Hardcore Games wrote:
fzabkar wrote:
Hardcore Games wrote:I may need to get a cheap scope to figure the signalling better rather than risk my expensive one

Clearly, you understand nothing about oscilloscopes, either.


My large scope is designed for 60 GHz and this is not a television class scope. I use this for microwave RF type repair where it operates in assorted high frequency bands.

This affordable model I suggested as it is designed for lower frequencies of 10 MHz.


Clearly, you understand nothing about oscilloscopes, either.

Re: SATA 4-pin to USB

August 23rd, 2026, 23:01

I use this for microwave RF type repair

I find this VERY hard to believe, and even more so in regards to the original statement/question/babble.

Re: SATA 4-pin to USB

August 25th, 2026, 4:31

Hardcore Games wrote:My large scope is designed for 60 GHz and this is not a television class scope.

And a personal particle accelerator. And a shuttle... :lol:

Re: SATA 4-pin to USB

September 6th, 2026, 18:18

anyway back to the question of 4-pin and interfacing then possibly using USB to make life easier but I doubt the USB route would be easy

Re: SATA 4-pin to USB

September 7th, 2026, 22:05

"...using USB to make life easier but I doubt the USB route would be easy"

clear as mud

Re: SATA 4-pin to USB

September 15th, 2026, 16:43

HaQue wrote:"...using USB to make life easier but I doubt the USB route would be easy"

clear as mud


Only other idea is a logic board with USB to 4-pins so some parts would be needed such one of the USB to 4-pins which are cheap and I saw more recent USB-C boards that were not as convenient.

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Re: SATA 4-pin to USB

September 15th, 2026, 19:43

Hardcore Games wrote:
HaQue wrote:"...using USB to make life easier but I doubt the USB route would be easy"

clear as mud


Only other idea is a logic board with USB to 4-pins so some parts would be needed such one of the USB to 4-pins which are cheap and I saw more recent USB-C boards that were not as convenient.

Image


Amazing idea! This will change the entire data recovery industry! Do you have any more idea's?

Re: SATA 4-pin to USB

September 15th, 2026, 21:31

I am alway searching around for solutions to headaches. Thankfully not much to worry with this old P15 I found cheap. I like the OLED display. So the USB solution seems like the solution de jour in order to maybe get some handle on a hard disk that stopped working.

I have bought lots of disks over the years. Aside from one old Seagate disk I needed to wipe all the time, I have not had much go wrong so far.

Re: SATA 4-pin to USB

September 16th, 2026, 0:04

WebClaw wrote:
Hardcore Games wrote:
HaQue wrote:"...using USB to make life easier but I doubt the USB route would be easy"

clear as mud


Only other idea is a logic board with USB to 4-pins so some parts would be needed such one of the USB to 4-pins which are cheap and I saw more recent USB-C boards that were not as convenient.

Image


Amazing idea! This will change the entire data recovery industry! Do you have any more idea's?


It is seriously like putting 20c in and hitting the button with Hardcore Games isnt it!

Re: SATA 4-pin to USB

September 17th, 2026, 14:26

Given hard disks are mechanical I have found helium disks to be more durable than air filled disks. All I know is that hard disk reliability has improved somewhat but backups eliminate the risk of operating errors which are more common than disk failures.

Backblaze uses days but CrystalDiskInfo shows hours. Looking at the details, it seems my P15 SSDs report hours as well.This is why I mention Backblaze who is slightly misaligned with actual INDENT table values.

I have long used CrystalDiskInfo which has been useful to identify flakey hard disks. So far SSD have not been as bad but I have seen lots of comments on forums about SSD failures.

Only reason I like USB is that is what my Lenovo P15 uses.

Re: SATA 4-pin to USB

September 17th, 2026, 18:30

Hardcore Games wrote:I have seen lots of comments on forums

That would happen as a bot ingesting many forums

Hardcore Games wrote:Only reason I like USB is that is what my Lenovo P15 uses.


every PC uses USB, what are you talking about?

Re: SATA 4-pin to USB

September 18th, 2026, 3:48

i almost feel like i must get a P15 and a few dozens of HSB or TB enclosures sooner or later. Life is much more fun with them.
First steps towards happiness.
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