Solved Need help with new external USB SSD

rezpower · Jul 2, 2024

hsehestedt said:
I am under the assumption that this is a new drive and not heavily used yet. However, if that drive has been used heavily check this:

Right click that drive in File Explorer and select properties. Go to the Tools tab, select Optimize, select the SSD, and finally select Optimize. Click OK.

This will ensure that previously used blocks are all TRIMmed.

NOTE: After doing the above, wait several minutes before you test speed to allow the drive some time to TRIM at least some of the drive in the background, if it even needs it.

Although it is not really likely, I'm asking you to try this "just in case" because blocks that need to be TRIMed can severely slow down the performance.

Again, I don't think this likely, especially in view of some of your other symptoms, but it's worth a shot since this is such a simple operation.

The disk is brand new and less then one Tera data on it. But I did the optimization as you instructed and after it was finished the problem is still the same.

rezpower · Jul 2, 2024

dacrone said:
Did you try either
Raxco's Perfect Disk "SSD Optimize" or "Free Space Consolidation” mentioned? Link is there

Raxo site seems to be down! could not get it. I will try this tomorrow.

rezpower · Jul 2, 2024

I have the feeling that somehow windows is connecting the SSD with wrong protocol as if it recognize it as USB2 or ...!!
this dose not happen on reboot!!! I wish there was a way to see how is it recognized before and after reboot! and to find out what difference happens after I reboot the PC!

dacrone · Jul 2, 2024

You can try letting the cache clear itself..

Optimizing External SSD drive write performance | Seagate US

You can also see if the option to disable write caching is available

Rock_doctor · Jul 2, 2024

I have a similar issue with a Toshiba T7 2 TB portable SSD connected through the Thuderbolt port on my HP ProDesk 400 G6 Desktop Mini PC.
In addition when I shut down my PC the SSD remains on and heats up over time.

ian50 · Jul 2, 2024

@rezpower 12:27PM post

I agree, it does seem as if your PC is using different connect protocols for boot or plugin.

As a suggestion, have you tried Crystal Disk for information on disk characteristics. Try for both boot and then plugin - maybe this will give some clues.

I've used Crystal Disk for such information on both HDD and SSD external drives, so it might point you somewhere useful. And it's free.

MisterEd · Jul 3, 2024

I am assuming the SSD comes with a USB-C to USB-C cable. You said you tried all the USB ports. Do you mean only the USB-C ports? Have you tried using a USB-C to USB-A cable and plugging into a USB-A port?

rezpower · Jul 3, 2024

MisterEd said:
I am assuming the SSD comes with a USB-C to USB-C cable. You said you tried all the USB ports. Do you mean only the USB-C ports? Have you tried using a USB-C to USB-A cable and plugging into a USB-A port?

I tried and connected the disk to USB-A port and it gives me 40MB/S speed. As much as USB2 and not even normal usb3 speed!

rezpower · Jul 3, 2024

ian50 said:
@rezpower 12:27PM post

I agree, it does seem as if your PC is using different connect protocols for boot or plugin.

As a suggestion, have you tried Crystal Disk for information on disk characteristics. Try for both boot and then plugin - maybe this will give some clues.

I've used Crystal Disk for such information on both HDD and SSD external drives, so it might point you somewhere useful. And it's free.

Just tried Crystal Disk info and I am getting the exact same info in both slow and normal mode:

I also used UsbTreeView and the result was the same with both slow and normal states:
=========================== USB Port4 ===========================

Connection Status : 0x01 (Device is connected)
Port Chain : 1-4
Properties : 0x0B
IsUserConnectable : yes
PortIsDebugCapable : yes
PortHasMultiCompanions : no
PortConnectorIsTypeC : yes
ConnectionIndex : 4
CompanionIndex : 0
CompanionHubSymLnk : USB#ROOT_HUB30#4&f6c7091&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
CompanionPortNumber : 12

======================== USB Device ========================

+++++++++++++++++ Device Information ++++++++++++++++++
Device Description : USB Attached SCSI (UAS) Mass Storage Device
Device Path : \\?\usb#vid_04e8&pid_6200#msft3000000s7chnj0x203459x#{a5dcbf10-6530-11d2-901f-00c04fb951ed}
Device ID : USB\VID_04E8&PID_6200\MSFT3000000S7CHNJ0X203459X
Hardware IDs : USB\VID_04E8&PID_6200&REV_0001 USB\VID_04E8&PID_6200
Driver KeyName : {4d36e97b-e325-11ce-bfc1-08002be10318}\0005 (GUID_DEVCLASS_SCSIADAPTER)
Driver : \SystemRoot\System32\drivers\uaspstor.sys (Version: 10.0.22621.3672 Date: 2024-06-12)
Driver Inf : C:\Windows\inf\uaspstor.inf
Legacy BusType : PNPBus
Class : SCSIAdapter
Class GUID : {4d36e97b-e325-11ce-bfc1-08002be10318} (GUID_DEVCLASS_SCSIADAPTER)
Interface GUID : {a5dcbf10-6530-11d2-901f-00c04fb951ed} (GUID_DEVINTERFACE_USB_DEVICE)
Service : UASPStor
Enumerator : USB
Location Info : Port_#0004.Hub_#0002
Location IDs : PCIROOT(0)#PCI(1A00)#PCI(0000)#PCI(0200)#PCI(0000)#USBROOT(0)#USB(4), ACPI(_SB_)#ACPI(PC00)#ACPI(RP25)#ACPI(PXSX)#ACPI(TBDU)#ACPI(XHCI)#ACPI(RHUB)#ACPI(SS02)
Container ID : {823e2078-58df-5d07-b4ba-a66dfb32ce8d}
Manufacturer Info : USB Attached SCSI (UAS) Compatible Device
Capabilities : 0x14 (Removable, UniqueID)
Status : 0x0180600A (DN_DRIVER_LOADED, DN_STARTED, DN_DISABLEABLE, DN_REMOVABLE, DN_NT_ENUMERATOR, DN_NT_DRIVER)
Problem Code : 0
Power State : D0 (supported: D0, D3, wake from D0)
Child Device 1 : Samsung PSSD T5 EVO SCSI Disk Device (Disk drive) (Disk2)
DevicePath : \\?\scsi#disk&ven_samsung&prod_pssd_t5_evo#9&1a67d971&0&000000#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}
KernelName : \Device\000000fc
Device ID : SCSI\DISK&VEN_SAMSUNG&PROD_PSSD_T5_EVO\9&1A67D971&0&000000
Class : DiskDrive
Volume : \\?\Volume{76d754fe-7f08-45be-b65c-43cb495d397d}\
Kernel Name : \Device\HarddiskVolume24
Mountpoint : I:\

+++++++++++++++++ Registry USB Flags +++++++++++++++++
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\UsbFlags\04E862000001
osvc : REG_BINARY 00 00

---------------- Connection Information ---------------
Connection Index : 0x04 (4)
Connection Status : 0x01 (DeviceConnected)
Current Config Value : 0x01
Device Address : 0x01 (1)
Is Hub : 0x00 (no)
Device Bus Speed : 0x02 (High-Speed) -> not true, see below in Connection Information V2
Number Of Open Pipes : 0x04 (4 pipes to data endpoints)
Pipe[0] : EndpointID=1 Direction=IN ScheduleOffset=0 Type=Bulk
Pipe[1] : EndpointID=2 Direction=OUT ScheduleOffset=0 Type=Bulk
Pipe[2] : EndpointID=3 Direction=IN ScheduleOffset=0 Type=Bulk
Pipe[3] : EndpointID=4 Direction=OUT ScheduleOffset=0 Type=Bulk
Data (HexDump) : 04 00 00 00 12 01 10 03 00 00 00 09 E8 04 00 62 ...............b
01 00 02 03 01 01 01 02 00 01 00 04 00 00 00 01 ................
00 00 00 07 05 81 02 00 04 00 00 00 00 00 07 05 ................
02 02 00 04 00 00 00 00 00 07 05 83 02 00 04 00 ................
00 00 00 00 07 05 04 02 00 04 00 00 00 00 00 ...............

--------------- Connection Information V2 -------------
Connection Index : 0x04 (4)
Length : 0x10 (16 bytes)
SupportedUsbProtocols : 0x04
Usb110 : 0 (no)
Usb200 : 0 (no)
Usb300 : 1 (yes)
ReservedMBZ : 0x00
Flags : 0x0B
DevIsOpAtSsOrHigher : 1 (Is operating at SuperSpeed or higher)
DevIsSsCapOrHigher : 1 (Is SuperSpeed capable or higher)
DevIsOpAtSsPlusOrHigher : 0 (Is not operating at SuperSpeedPlus or higher)
DevIsSsPlusCapOrHigher : 1 (Is SuperSpeedPlus capable or higher)
ReservedMBZ : 0x00
Data (HexDump) : 04 00 00 00 10 00 00 00 04 00 00 00 0B 00 00 00 ................

---------------------- Device Descriptor ----------------------
bLength : 0x12 (18 bytes)
bDescriptorType : 0x01 (Device Descriptor)
bcdUSB : 0x310 (USB Version 3.10)
bDeviceClass : 0x00 (defined by the interface descriptors)
bDeviceSubClass : 0x00
bDeviceProtocol : 0x00
bMaxPacketSize0 : 0x09 (9 bytes)
idVendor : 0x04E8 (Samsung Electronics Co., Ltd.)
idProduct : 0x6200
bcdDevice : 0x0001
iManufacturer : 0x02 (String Descriptor 2)
Language 0x0409 : "Samsung"
iProduct : 0x03 (String Descriptor 3)
Language 0x0409 : "PSSD T5 EVO"
iSerialNumber : 0x01 (String Descriptor 1)
Language 0x0409 : "00000S7CXXX0X203459X"
bNumConfigurations : 0x01 (1 Configuration)
Data (HexDump) : 12 01 10 03 00 00 00 09 E8 04 00 62 01 00 02 03 ...........b....
01 01 ..

------------------ Configuration Descriptor -------------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x02 (Configuration Descriptor)
wTotalLength : 0x0079 (121 bytes)
bNumInterfaces : 0x01 (1 Interface)
bConfigurationValue : 0x01 (Configuration 1)
iConfiguration : 0x00 (No String Descriptor)
bmAttributes : 0x80
D7: Reserved, set 1 : 0x01
D6: Self Powered : 0x00 (no)
D5: Remote Wakeup : 0x00 (no)
D4..0: Reserved, set 0 : 0x00
MaxPower : 0x70 (896 mA)
Data (HexDump) : 09 02 79 00 01 01 00 80 70 09 04 00 00 02 08 06 ..y.....p.......
50 00 07 05 81 02 00 04 00 06 30 0F 00 00 00 07 P.........0.....
05 02 02 00 04 00 06 30 0F 00 00 00 09 04 00 01 .......0........
04 08 06 62 00 07 05 81 02 00 04 00 06 30 0F 05 ...b.........0..
00 00 04 24 03 00 07 05 02 02 00 04 00 06 30 0F ...$..........0.
05 00 00 04 24 04 00 07 05 83 02 00 04 00 06 30 ....$..........0
0F 05 00 00 04 24 02 00 07 05 04 02 00 04 00 06 .....$..........
30 00 00 00 00 04 24 01 00 0.....$..

---------------- Interface Descriptor -----------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x04 (Interface Descriptor)
bInterfaceNumber : 0x00
bAlternateSetting : 0x00
bNumEndpoints : 0x02 (2 Endpoints)
bInterfaceClass : 0x08 (Mass Storage)
bInterfaceSubClass : 0x06 (SCSI transparent command set)
bInterfaceProtocol : 0x50 (Bulk-Only Transport)
iInterface : 0x00 (No String Descriptor)
Data (HexDump) : 09 04 00 00 02 08 06 50 00 .......P.

----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x81 (Direction=IN EndpointID=1)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 81 02 00 04 00 .......

------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x0F (up to 16 packets per burst)
bmAttributes : 0x00 (The bulk endpoint does not define streams)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 0F 00 00 00 .0....

----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x02 (Direction=OUT EndpointID=2)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 02 02 00 04 00 .......

------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x0F (up to 16 packets per burst)
bmAttributes : 0x00 (The bulk endpoint does not define streams)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 0F 00 00 00 .0....

---------------- Interface Descriptor -----------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x04 (Interface Descriptor)
bInterfaceNumber : 0x00
bAlternateSetting : 0x01
bNumEndpoints : 0x04 (4 Endpoints)
bInterfaceClass : 0x08 (Mass Storage)
bInterfaceSubClass : 0x06 (SCSI transparent command set)
bInterfaceProtocol : 0x62 (USB Attached SCSI - UAS)
iInterface : 0x00 (No String Descriptor)
Data (HexDump) : 09 04 00 01 04 08 06 62 00 .......b.

----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x81 (Direction=IN EndpointID=1)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 81 02 00 04 00 .......

------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x0F (up to 16 packets per burst)
bmAttributes : 0x05 (32 streams supported)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 0F 05 00 00 .0....

------------- UAS Pipe Usage Descriptor ---------------
bLength : 0x04 (4 bytes)
bDescriptorType : 0x24 (UAS Pipe Usage Descriptor)
bPipeID : 0x03 (Pipe ID=3)
bReserved : 0x00
Data (HexDump) : 04 24 03 00 .$..

----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x02 (Direction=OUT EndpointID=2)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 02 02 00 04 00 .......

------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x0F (up to 16 packets per burst)
bmAttributes : 0x05 (32 streams supported)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 0F 05 00 00 .0....

------------- UAS Pipe Usage Descriptor ---------------
bLength : 0x04 (4 bytes)
bDescriptorType : 0x24 (UAS Pipe Usage Descriptor)
bPipeID : 0x04 (Pipe ID=4)
bReserved : 0x00
Data (HexDump) : 04 24 04 00 .$..

----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x83 (Direction=IN EndpointID=3)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 83 02 00 04 00 .......

------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x0F (up to 16 packets per burst)
bmAttributes : 0x05 (32 streams supported)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 0F 05 00 00 .0....

------------- UAS Pipe Usage Descriptor ---------------
bLength : 0x04 (4 bytes)
bDescriptorType : 0x24 (UAS Pipe Usage Descriptor)
bPipeID : 0x02 (Pipe ID=2)
bReserved : 0x00
Data (HexDump) : 04 24 02 00 .$..

----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x04 (Direction=OUT EndpointID=4)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 04 02 00 04 00 .......

------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x00 (up to 1 packets per burst)
bmAttributes : 0x00 (The bulk endpoint does not define streams)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 00 00 00 00 .0....

------------- UAS Pipe Usage Descriptor ---------------
bLength : 0x04 (4 bytes)
bDescriptorType : 0x24 (UAS Pipe Usage Descriptor)
bPipeID : 0x01 (Pipe ID=1)
bReserved : 0x00
Data (HexDump) : 04 24 01 00 .$..

---------- Binary Object Store (BOS) Descriptor -----------
bLength : 0x05 (5 bytes)
bDescriptorType : 0x0F (Binary Object Store)
wTotalLength : 0x002A (42 bytes)
bNumDeviceCaps : 0x03
Data (HexDump) : 05 0F 2A 00 03 ..*..

------------- USB 2.0 Extension Descriptor ------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x10 (Device Capability Descriptor)
bDevCapabilityType : 0x02 (USB 2.0 Extension)
bmAttributes : 0xF41E
LPMCapable : 1 (Link Power Management protocol is supported)
BESLAndAlternateHIRD : 1 (BESL & Alternate HIRD definitions are supported)
BaselineBESLValid : 1 (valid)
DeepBESLValid : 1 (valid)
BaselineBESL : 4 (400 µs)
DeepBESL : 15 (10000 µs)
Data (HexDump) : 07 10 02 1E F4 00 00 .......

----- SuperSpeed USB Device Capability Descriptor -----
bLength : 0x0A (10 bytes)
bDescriptorType : 0x10 (Device Capability Descriptor)
bDevCapabilityType : 0x03 (SuperSpeed USB Device Capability)
bmAttributes : 0x00
Bit 0 Reserved : 0x00
Bit 1 LTM Capable : 0x00 (no)
Bit 7:2 Reserved : 0x00
wSpeedsSupported : 0x0E (Full-Speed, High-Speed, SuperSpeed)
bFunctionalitySupport : 0x01 (lowest speed with all the functionality is 'Full-Speed')
bU1DevExitLat : 0x0A (less than 10 µs)
wU2DevExitLat : 0x07FF (less than 2047 µs)
Data (HexDump) : 0A 10 03 00 0E 00 01 0A FF 07 ..........

--------- SuperSpeedPlus USB Device Capability --------
bLength : 0x14 (20 bytes)
bDescriptorType : 0x10 (DEVICE CAPABILITY)
bDevCapabilityType : 0x0A (SUPERSPEED_PLUS)
bReserved : 0x00
bmAttributes : 0x00000001
Bit 4:0 SSAC : 0x01 (2 Sublink Speed Attributes)
Bit 8:5 SSIC : 0x00 (1 Sublink Speed IDs)
wFunctionalitySupport : 0x1100
Bit 3:0 SSID : 0x00 (0)
Bit 7:4 Reserved : 0x00 (0)
Bit 11:8 Min Rx Lanes : 0x01 (1)
Bit 15:12 Min Tx Lanes : 0x01 (1)
wReserved : 0x00
bmSublinkSpeedAttr0 : 0x000A4030
Bit 3:0 SSID : 0x00 (Sublink Speed Attribute ID 0)
Bit 5:4 LSE : 0x03 (Lane Speed Exponent is 9 -> Gbit/s)
Bit 7:6 ST : 0x00 (Symmetric, Receive Mode)
Bit 13:8 Reserved : 0x00
Bit 15:14 LP : 0x01 (SuperSpeedPlus)
Bit 31:16 LSM : 0x000A (Lane Speed Mantissa is 10)
bmSublinkSpeedAttr1 : 0x000A40B0
Bit 3:0 SSID : 0x00 (Sublink Speed Attribute ID 0)
Bit 5:4 LSE : 0x03 (Lane Speed Exponent is 9 -> Gbit/s)
Bit 7:6 ST : 0x02 (Symmetric, Transmit Mode)
Bit 13:8 Reserved : 0x00
Bit 15:14 LP : 0x01 (SuperSpeedPlus)
Bit 31:16 LSM : 0x000A (Lane Speed Mantissa is 10)

-------------------- String Descriptors -------------------
------ String Descriptor 0 ------
bLength : 0x04 (4 bytes)
bDescriptorType : 0x03 (String Descriptor)
Language ID[0] : 0x0409 (English - United States)
Data (HexDump) : 04 03 09 04 ....
------ String Descriptor 1 ------
bLength : 0x2A (42 bytes)
bDescriptorType : 0x03 (String Descriptor)
Language 0x0409 : "00000S7CHNJ0X203459X"
Data (HexDump) : 2A 03 30 00 30 00 30 00 30 00 30 00 53 00 37 00 *.0.0.0.0.0.S.7.
43 00 48 00 4E 00 4A 00 30 00 58 00 32 00 30 00 C.H.N.J.0.X.2.0.
33 00 34 00 35 00 39 00 58 00 3.4.5.9.X.
------ String Descriptor 2 ------
bLength : 0x10 (16 bytes)
bDescriptorType : 0x03 (String Descriptor)
Language 0x0409 : "Samsung"
Data (HexDump) : 10 03 53 00 61 00 6D 00 73 00 75 00 6E 00 67 00 ..S.a.m.s.u.n.g.
------ String Descriptor 3 ------
bLength : 0x18 (24 bytes)
bDescriptorType : 0x03 (String Descriptor)
Language 0x0409 : "PSSD T5 EVO"
Data (HexDump) : 18 03 50 00 53 00 53 00 44 00 20 00 54 00 35 00 ..P.S.S.D. .T.5.
20 00 45 00 56 00 4F 00 .E.V.O.

rezpower · Jul 6, 2024

A little update:
I just thought that maybe I should try this in Windows Safe Mode and see if it makes any changes!
To my surprise if I attach the SSD in windows safe mode it will give me the max speed with no problems!
So it seems that there is something wrong with my Windows 11 and not the SSD!

ian50 · Jul 6, 2024

rezpower:

... there is something wrong with my Windows 11 ...

Driver issue when the OS is fully loaded ? Perhaps a Repair session ?

Berton · Jul 6, 2024

Usually Safe Mode, being used for diagnostics, doesn't load all drivers, have you checked Device Manager in both modes to see if there's any differences?

dacrone · Jul 6, 2024

run robocopy on a huge file and see how long it takes in normal mode. curious if its something with the front end gui bogging it down

EDIT: i did this. still slows down a few times after 50% marker.

going from internal M.2 to external M.2 via usb-c is where it hiccups after 50%
going from external M.2 via usb-c to internal M.2 is smooth. flashes by with speeds over 500mbs per second

Tested with 11.4gb mp4 file

rezpower · Jul 8, 2024

Sorry for the late reply. It was a big headache trying to troubleshoot and I had to give up. What I did as last option was to install a new Windows and suddenly the problem was solved! So the problem was from my windows, but I still don't know what it was! For others experiencing such problem, maybe you could try first, what I did last (try your device in safe mode) or on another PC to at least make sure the problem is not due to the disk itself.

I still have one question left! When I connect the device now, it gives me between 280 and 300 MB/s speed instead of 100MB/s. But even when I reboot the PC or put it on sleep, it does not go up the 370 ~380 MB/s like before! My PC has different power plans (Balanced and High performance) and I realize that when PC is in High Performance mode the speed of the SSD goes 50 to 60 MB/s higher.
I don't want to have my PC all the time on high performance mode only for the SSD to remain fast. So is it possible to modify the Balanced power plan to ONLY set the usb SSD work at max performance while leaving the plan balanced for all the rest?

Berton · Jul 8, 2024

I haven't measured but am satisfied with data copied to a pair of self-powered 4TB HDDs connected to a self-powered 4-port USB 3 Hub connected to one of the USB 3-A ports on my Desktop. I have noticed that the USB-C port on the front of the Desktop may not be quite as fast.

PerpetualCycle · Jul 8, 2024

FreeBooter said:
This is not recommended, but you can enable Better Performance for your external driver from Device Manager which can help.

View attachment 100516

Also install latest version of USB and Chipset drivers.

Why is it not recommended? This is the way it is supposed to be setup and is recommended to do. You just need to make sure you safely disconnect it when done.

rezpower · Jul 8, 2024

here I am talking about different power plans and from what I understand in balanced mode the PC used less power then in performance mode. I am just trying to find out if it is possible to make an exception for the usb port and give it max power under balanced mode.

FreeBooter · Jul 8, 2024

PerpetualCycle said:
Why is it not recommended? This is the way it is supposed to be setup and is recommended to do. You just need to make sure you safely disconnect it when done.

Because of Safety disconnection, not everyone follow this rule all the time.

PerpetualCycle · Jul 8, 2024

FreeBooter said:
Because of Safety disconnection, not everyone follow this rule all the time.

Then performance tanks. As mentioned for the rate, an SSD running at less than a HDD rate,

XxXxX · Jul 8, 2024

rezpower said:
here I am talking about different power plans and from what I understand in balanced mode the PC used less power then in performance mode. I am just trying to find out if it is possible to make an exception for the usb port and give it max power under balanced mode.

thats exactly what i do via advanced power settings.
also just to note ..
via the device manager it maybe worthwhile checking the properties and then power setting for all USB devices as they could be set to
allow system to put them to sleep.

i hope this maybe of help and best of luck. Steve ..