Raspberry Pi USB Flash Drive (128GB)
2026年2月8日21:35
IODD手に入れたので特にインストールUSBとしての用事もなくなってたんですが、どうやらちゃんと書きもそこそこ出るっぽいって話を聞いて買ってみました。
秋月で128GBが3500+送料でございました。
https://www.raspberrypi.com/products/flash-drive
違いは256GBになると書き速度が倍になるぐらい（中身は128GBの並列版？）な気もしますがもしかしたら違うかもしれないとだけ。
出続けるとされている公表値の書き速度はちゃんと守れてるっぽいです。ありかもしれません。H2testwがちょうどよかったのかは微妙ですが。
アテになるか知りませんしうっかり1GBで計測しちゃったし8系なんでアレなんですが
------------------------------------------------------------------------------
CrystalDiskMark 8.0.4 x64 (C) 2007-2021 hiyohiyo
Crystal Dew World: https://crystalmark.info/
------------------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes
[Read]
SEQ 1MiB (Q= 8, T= 1): 381.082 MB/s [ 363.4 IOPS] < 21945.16 us>
SEQ 1MiB (Q= 1, T= 1): 370.109 MB/s [ 353.0 IOPS] < 2831.42 us>
RND 4KiB (Q= 32, T= 1): 102.356 MB/s [ 24989.3 IOPS] < 1279.59 us>
RND 4KiB (Q= 1, T= 1): 33.773 MB/s [ 8245.4 IOPS] < 121.07 us>
[Write]
SEQ 1MiB (Q= 8, T= 1): 290.583 MB/s [ 277.1 IOPS] < 28727.48 us>
SEQ 1MiB (Q= 1, T= 1): 282.746 MB/s [ 269.6 IOPS] < 3706.81 us>
RND 4KiB (Q= 32, T= 1): 48.736 MB/s [ 11898.4 IOPS] < 2683.85 us>
RND 4KiB (Q= 1, T= 1): 33.026 MB/s [ 8063.0 IOPS] < 123.80 us>
Profile: Default
Test: 1 GiB (x3) [K: 91% (109/120GiB)]
Mode: [Admin]
Time: Measure 5 sec / Interval 5 sec
Date: 2026/02/07 19:08:19
OS: Windows 11 Professional [10.0 Build 26200] (x64)
一応UASPっぽくてDiskInfoでは認識するんですが、使用時間のカウントが進まない、読み書きの生の値的にはGB単位だけど1/4されてそう、など素直に動かないっぽいので、なんか間違えているのか本当に取得できてない値なのがはっきりしません、あんまりアテにしない方が良さそうです。
おまけ
Raspberry Pi NVMe SSD
はどんな感じで認識されるのが気になったのでググったんですが、256GBだけはPM991,512GB以上はBiwinの組み込み用っぽい感じで中身は普通のSSDっぽそうです。（なので適当に使い回したとしてもDiskInfo等で問題なく見えるんじゃないのでしょうか）
https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/679
USB Device Tree Viewer V3.8.9
長いのでtxtで
=========================== USB Port5 ===========================
Connection Status : 0x01 (Device is connected)
Port Chain : 4-5
Properties : 0x03
IsUserConnectable : yes
PortIsDebugCapable : yes
PortHasMultiCompanions : no
PortConnectorIsTypeC : no
ConnectionIndex : 0x05 (Port 5)
CompanionIndex : 0
CompanionHubSymLnk : USB#ROOT_HUB30#5&cd58b07&0&0#{f18a0e88-c30c-11d0-8815-00a0c906bed8}
CompanionPortNumber : 0x01 (Port 1)
-> CompanionPortChain : 4-1
========================== Summary =========================
Vendor ID : 0x2E8A (Raspberry Pi (Trading) Limited)
Product ID : 0x0030
USB Version : 3.2 Gen 1
Port maximum Speed : SuperSpeed
Device maximum Speed : SuperSpeed
Device Connection Speed : SuperSpeed
Self powered : no
Demanded Current : 304 mA
Used Endpoints : 5
======================== USB Device ========================
+++++++++++++++++ Device Information ++++++++++++++++++
Device Description : USB 接続 SCSI (UAS) マス ストレージ デバイス
Device Path 1 : \\?\USB#VID_2E8A&PID_0030#MSFT300374200004BB#{a5dcbf10-6530-11d2-901f-00c04fb951ed} (GUID_DEVINTERFACE_USB_DEVICE)
Device Path 2 : \\?\USB#VID_2E8A&PID_0030#MSFT300374200004BB#{2accfe60-c130-11d2-b082-00a0c91efb8b} (GUID_DEVINTERFACE_STORAGEPORT)
Kernel Name : \Device\USBPDO-5
Device ID : USB\VID_2E8A&PID_0030\MSFT300374200004BB
Hardware IDs : USB\VID_2E8A&PID_0030&REV_1100 USB\VID_2E8A&PID_0030
Driver KeyName : {4d36e97b-e325-11ce-bfc1-08002be10318}\0006 (GUID_DEVCLASS_SCSIADAPTER)
Driver : \SystemRoot\System32\drivers\uaspstor.sys (Version: 10.0.26100.1882 Date: 2025-09-16)
Driver Inf : C:\WINDOWS\inf\uaspstor.inf
Legacy BusType : PNPBus
Class : SCSIAdapter
Class GUID : {4d36e97b-e325-11ce-bfc1-08002be10318} (GUID_DEVCLASS_SCSIADAPTER)
Service : UASPStor
Enumerator : USB
Location Info : Port_#0005.Hub_#0004
Location IDs : PCIROOT(0)#PCI(0801)#PCI(0003)#USBROOT(0)#USB(5), ACPI(_SB_)#ACPI(PCI0)#ACPI(GP13)#ACPI(XHC0)#ACPI(RHUB)#ACPI(PRT5)
Container ID : {750b5441-c9e9-5f91-a298-b373f5e1312d}
Manufacturer Info : USB 接続 SCSI (UAS) 互換デバイス
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 : General USB Flash Drive SCSI Disk Device (ディスク ドライブ)
Device Path : \\?\SCSI#Disk&Ven_General&Prod_USB_Flash_Drive#7&3a9904e&0&000000#{53f56307-b6bf-11d0-94f2-00a0c91efb8b} (GUID_DEVINTERFACE_DISK)
Kernel Name : \Device\000000a6
Device ID : SCSI\DISK&VEN_GENERAL&PROD_USB_FLASH_DRIVE\7&3A9904E&0&000000
Class : DiskDrive
Driver KeyName : {4d36e967-e325-11ce-bfc1-08002be10318}\0012 (GUID_DEVCLASS_DISKDRIVE)
Service : disk
Location : Bus Number 0, Target Id 0, LUN 0
+++++++++++++++++ Registry USB Flags +++++++++++++++++
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\2E8A00301100
osvc : REG_BINARY 00 00
---------------- Connection Information ---------------
Connection Index : 0x05 (Port 5)
Connection Status : 0x01 (DeviceConnected)
Current Config Value : 0x01 (Configuration 1)
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=OUT ScheduleOffset=0 Type=Bulk wMaxPacketSize=0x400 bInterval=0
Pipe[1] : EndpointID=2 Direction=IN ScheduleOffset=0 Type=Bulk wMaxPacketSize=0x400 bInterval=0
Pipe[2] : EndpointID=3 Direction=OUT ScheduleOffset=0 Type=Bulk wMaxPacketSize=0x400 bInterval=0
Pipe[3] : EndpointID=4 Direction=IN ScheduleOffset=0 Type=Bulk wMaxPacketSize=0x400 bInterval=0
Data (HexDump) : 05 00 00 00 12 01 20 03 00 00 00 09 8A 2E 30 00 ...... .......0.
00 11 01 02 03 01 01 02 00 01 00 04 00 00 00 01 ................
00 00 00 07 05 01 02 00 04 00 00 00 00 00 07 05 ................
82 02 00 04 00 00 00 00 00 07 05 03 02 00 04 00 ................
00 00 00 00 07 05 84 02 00 04 00 00 00 00 00 ...............
--------------- Connection Information V2 -------------
Connection Index : 0x05 (5)
Length : 0x10 (16 bytes)
SupportedUsbProtocols : 0x04
Usb110 : 0 (no, port not supports USB 1.1) -> but Companion Port 4-1 does
Usb200 : 0 (no, port not supports USB 2.0) -> but Companion Port 4-1 does
Usb300 : 1 (yes, port supports USB 3.0)
ReservedMBZ : 0x00
Flags : 0x03
DevIsOpAtSsOrHigher : 1 (Device is operating at SuperSpeed or higher)
DevIsSsCapOrHigher : 1 (Device is SuperSpeed capable or higher)
DevIsOpAtSsPlusOrHigher : 0 (Device is not operating at SuperSpeedPlus or higher)
DevIsSsPlusCapOrHigher : 0 (Device is not SuperSpeedPlus capable or higher)
ReservedMBZ : 0x00
Data (HexDump) : 05 00 00 00 10 00 00 00 04 00 00 00 03 00 00 00 ................
---------------------- Device Descriptor ----------------------
bLength : 0x12 (18 bytes)
bDescriptorType : 0x01 (Device Descriptor)
bcdUSB : 0x320 (USB Version 3.2)
bDeviceClass : 0x00 (defined by the interface descriptors)
bDeviceSubClass : 0x00
bDeviceProtocol : 0x00
bMaxPacketSize0 : 0x09 (9 bytes)
idVendor : 0x2E8A (Raspberry Pi (Trading) Limited)
idProduct : 0x0030
bcdDevice : 0x1100
iManufacturer : 0x01 (String Descriptor 1)
Language 0x0409 : "Raspberry Pi"
iProduct : 0x02 (String Descriptor 2)
Language 0x0409 : "USB Flash Drive"
iSerialNumber : 0x03 (String Descriptor 3)
Language 0x0409 : "0000000000AB"
bNumConfigurations : 0x01 (1 Configuration)
Data (HexDump) : 12 01 20 03 00 00 00 09 8A 2E 30 00 00 11 01 02 .. .......0.....
03 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 : 0x26 (304 mA)
Data (HexDump) : 09 02 79 00 01 01 00 80 26 09 04 00 00 02 08 06 ..y.....&.......
50 00 07 05 01 02 00 04 00 06 30 08 00 00 00 07 P.........0.....
05 82 02 00 04 00 06 30 08 00 00 00 09 04 00 01 .......0........
04 08 06 62 00 07 05 01 02 00 04 00 06 30 08 03 ...b.........0..
00 00 04 24 04 00 07 05 82 02 00 04 00 06 30 08 ...$..........0.
03 00 00 04 24 03 00 07 05 03 02 00 04 00 06 30 ....$..........0
00 00 00 00 04 24 01 00 07 05 84 02 00 04 00 06 .....$..........
30 08 03 00 00 04 24 02 00 0.....$..
---------------- Interface Descriptor -----------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x04 (Interface Descriptor)
bInterfaceNumber : 0x00 (Interface 0)
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 : 0x01 (Direction=OUT EndpointID=1)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 01 02 00 04 00 .......
------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x08 (up to 9 packets per burst)
bmAttributes : 0x00 (The bulk endpoint does not define streams)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 08 00 00 00 .0....
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x82 (Direction=IN EndpointID=2)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 82 02 00 04 00 .......
------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x08 (up to 9 packets per burst)
bmAttributes : 0x00 (The bulk endpoint does not define streams)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 08 00 00 00 .0....
---------------- Interface Descriptor -----------------
bLength : 0x09 (9 bytes)
bDescriptorType : 0x04 (Interface Descriptor)
bInterfaceNumber : 0x00 (Interface 0)
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 : 0x01 (Direction=OUT EndpointID=1)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 01 02 00 04 00 .......
------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x08 (up to 9 packets per burst)
bmAttributes : 0x03 (8 streams supported)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 08 03 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 .$..
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x82 (Direction=IN EndpointID=2)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 82 02 00 04 00 .......
------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x08 (up to 9 packets per burst)
bmAttributes : 0x03 (8 streams supported)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 08 03 00 00 .0....
------------- UAS Pipe Usage Descriptor ---------------
bLength : 0x04 (4 bytes)
bDescriptorType : 0x24 (UAS Pipe Usage Descriptor)
bPipeID : 0x03 (Pipe ID=3)
bReserved : 0x00
Data (HexDump) : 04 24 03 00 .$..
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x03 (Direction=OUT EndpointID=3)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 03 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 .$..
----------------- Endpoint Descriptor -----------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x05 (Endpoint Descriptor)
bEndpointAddress : 0x84 (Direction=IN EndpointID=4)
bmAttributes : 0x02 (TransferType=Bulk)
wMaxPacketSize : 0x0400 (max 1024 bytes)
bInterval : 0x00 (never NAKs)
Data (HexDump) : 07 05 84 02 00 04 00 .......
------ SuperSpeed Endpoint Companion Descriptor -------
bLength : 0x06 (6 bytes)
bDescriptorType : 0x30 (SuperSpeed Endpoint Companion Descriptor)
bMaxBurst : 0x08 (up to 9 packets per burst)
bmAttributes : 0x03 (8 streams supported)
wBytesPerInterval : 0x0000
Data (HexDump) : 06 30 08 03 00 00 .0....
------------- UAS Pipe Usage Descriptor ---------------
bLength : 0x04 (4 bytes)
bDescriptorType : 0x24 (UAS Pipe Usage Descriptor)
bPipeID : 0x02 (Pipe ID=2)
bReserved : 0x00
Data (HexDump) : 04 24 02 00 .$..
---------- Binary Object Store (BOS) Descriptor -----------
bLength : 0x05 (5 bytes)
bDescriptorType : 0x0F (Binary Object Store)
wTotalLength : 0x0016 (22 bytes)
bNumDeviceCaps : 0x02
Data (HexDump) : 05 0F 16 00 02 .....
------------- USB 2.0 Extension Descriptor ------------
bLength : 0x07 (7 bytes)
bDescriptorType : 0x10 (Device Capability Descriptor)
bDevCapabilityType : 0x02 (USB 2.0 Extension)
bmAttributes : 0x06
LPMCapable : 1 (Link Power Management protocol is supported)
BESLAndAlternateHIRD : 1 (BESL & Alternate HIRD definitions are supported)
BaselineBESLValid : 0 (not valid)
DeepBESLValid : 0 (not valid)
BaselineBESL : 0
DeepBESL : 0
Data (HexDump) : 07 10 02 06 00 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 : 0x0C (High-Speed, SuperSpeed)
bFunctionalitySupport : 0x02 (lowest speed with all the functionality is 'High-Speed')
bU1DevExitLat : 0x04 (less than 4 µs)
wU2DevExitLat : 0x0004 (less than 4 µs)
Data (HexDump) : 0A 10 03 00 0C 00 02 04 04 00 ..........
-------------------- 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 : 0x1A (26 bytes)
bDescriptorType : 0x03 (String Descriptor)
Language 0x0409 : "Raspberry Pi"
Data (HexDump) : 1A 03 52 00 61 00 73 00 70 00 62 00 65 00 72 00 ..R.a.s.p.b.e.r.
72 00 79 00 20 00 50 00 69 00 r.y. .P.i.
------ String Descriptor 2 ------
bLength : 0x20 (32 bytes)
bDescriptorType : 0x03 (String Descriptor)
Language 0x0409 : "USB Flash Drive"
Data (HexDump) : 20 03 55 00 53 00 42 00 20 00 46 00 6C 00 61 00 .U.S.B. .F.l.a.
73 00 68 00 20 00 44 00 72 00 69 00 76 00 65 00 s.h. .D.r.i.v.e.
------ String Descriptor 3 ------
bLength : 0x1A (26 bytes)
bDescriptorType : 0x03 (String Descriptor)
Language 0x0409 : "0000000000AB"
Data (HexDump) : 1A 03 (シリアルなので略）