I bought one 64gb and it has printed the same but it actually has 32gb when i looked into my windows system. why is it so?

Have you looked at how the flash drive is set up? There's an outside chance that it merely has 1 primary partition set up as 32gb and 'unallocated' space that is the other half of your storage. For this you'll need to look at the drive with Disk Management in Windows to see how partitions are configured.

Is the usb-a connector backwards compatible with usb 2.0 ports?

Yes, it should be but without the same transfer speed as 3.0.

How many pictures will the 256gb sandisk hold?

A 256 GB Flash Drive will hold roughly 150,000 pictures. Or, it will hold about 50,000 pictures and 35-40 hours of movies together. At least according to my math from investigating data about this.

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Sandisk 64GB Ultra Dual Drive Go Usb Type-C Flash Drive, Black - Sdddc3-064G-G46

Product ID: 253400296

Details

Brand
SANDISK
Hardware interface
USB 3.1 Type A
Memory storage capacity
64 GB
Special features
Lightweight
Writing speed
150

⚡300 MB/s read speed

📱Seamless smartphone & PC compatibility

🔄Reversible USB Type-C & Type-A

₨8474

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Dual-speed data freedom for the multitasking pro

COMPACT LIGHTWEIGHT - Ultra-portable design at just 3.7 grams—carry your data anywhere, anytime.
BLAZING FAST TRANSFERS - Experience lightning-fast 300 MB/s read speeds that keep your workflow smooth and efficient.
SMARTPHONE STORAGE SAVIOR - Free up precious space on your USB-C smartphone with OTG support for on-the-go convenience.
DUAL CONNECTOR FLEXIBILITY - Switch effortlessly between USB Type-C and Type-A devices without missing a beat.
TRUSTED SAN DISK RELIABILITY - Join over 50,000 satisfied users enjoying top-tier performance and a 1-year warranty.

The SanDisk 64GB Ultra Dual Drive Go combines USB Type-C and Type-A connectors in a sleek, lightweight design, delivering up to 300 MB/s read speeds. Perfect for professionals juggling smartphones, tablets, Macs, and PCs, it offers seamless file transfers and OTG support to free up mobile storage, backed by SanDisk’s trusted quality and a 1-year warranty.

Specifications

ASIN	B07YYK13LF
Additional Features	Lightweight
Best Sellers Rank	#21 in Computers ( See Top 100 in Computers ) #1 in USB Flash Drives
Brand	SANDISK
Color	Black
Compatible Devices	Smartphones, tablets, Macs, USB Type-C or Type-A computers
Connectivity Technology	USB
Country of Origin	Malaysia
Customer Reviews	4.4 out of 5 stars 51,208 Reviews
Flash Memory Type	Memory Stick Duo
Global Trade Identification Number	00619659177171
Hardware Connectivity Technology	USB Type C
Hardware Interface	USB 3.1 Type A, USB Type C
Hardware interface	USB 3.1 Type A, USB Type C
Item Dimensions D x W x H	16D x 10W x 10H centimeters
Item Weight	3.7 Grams
Manufacturer	SanDisk
Memory Storage Capacity	64 GB
Memory storage capacity	64 GB
Mfr Part Number	SDDDC3-064G-G46
Model Name	Dual Drive Go USB Type C
Model Number	SDDDC3-064G-G46
Number of Items	1
Number of Packs	1
Read Speed	150 Megabits Per Second
Reading speed	150 Megabits Per Second
Special features	Lightweight
UPC	619659177171
Unit Count	1 Count
Warranty Description	1 Year Manufacturer Warranty
Write Speed	150
Writing speed	150

Reviews

I**N

Fast, Reliable & Convenient USB Drive

Great USB drive with both USB-A and USB-C connectors. The 64GB storage is useful, and the compact design makes it easy to carry and transfer files between devices. Works well and feels reliable.

27.09.2026

N**.

Great

Iam happy

21.09.2026

F**.

Works Pretty Well (Read & Write Speeds Below)

Works Well but The only Problem i would say with this usb is that it does get hot. Speed Tests are done on a Lenovo Legion With USB4 for Type C, and USB-A 3.2 Gen 2: On Type-C: ------------------------------------------------------------------------------ CrystalDiskMark 8.0.5 Edition x64 (C) 2007-2024 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): 258.765 MB/s [ 246.8 IOPS] < 32267.05 us> SEQ 1MiB (Q= 1, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> RND 4KiB (Q= 32, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> RND 4KiB (Q= 1, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> [Write] SEQ 1MiB (Q= 8, T= 1): 148.810 MB/s [ 141.9 IOPS] < 56002.79 us> SEQ 1MiB (Q= 1, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> RND 4KiB (Q= 32, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> RND 4KiB (Q= 1, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> Profile: Default Test: 1 GiB (x5) [E: 0% (0/115GiB)] Mode: [Admin] Time: Measure 5 sec / Interval 5 sec Date: 2024/08/21 13:13:03 OS: Windows 11 Pro 23H2 [10.0 Build 22631] (x64) On Type-A: ------------------------------------------------------------------------------ CrystalDiskMark 8.0.5 Edition x64 (C) 2007-2024 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): 247.526 MB/s [ 236.1 IOPS] < 33740.86 us> SEQ 1MiB (Q= 1, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> RND 4KiB (Q= 32, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> RND 4KiB (Q= 1, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> [Write] SEQ 1MiB (Q= 8, T= 1): 145.739 MB/s [ 139.0 IOPS] < 56816.66 us> SEQ 1MiB (Q= 1, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> RND 4KiB (Q= 32, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> RND 4KiB (Q= 1, T= 1): 0.000 MB/s [ 0.0 IOPS] < 0.00 us> Profile: Default Test: 1 GiB (x5) [E: 0% (0/115GiB)] Mode: [Admin] Time: Measure 5 sec / Interval 5 sec Date: 2024/08/21 13:29:17 OS: Windows 11 Pro 23H2 [10.0 Build 22631] (x64)

21.08.2024

B**D

Steal !

I got it for a steal deal !!

15.09.2026

M**L

أوكي

6.09.2026

Z**D

Very good

22.03.2026

S**R

Good

Cost is heigh

29.09.2026

U**1

فعاله ومفيدة

تناسب الآيفون والسامسونج ممتازة

24.06.2026

H**.

Buen precio

Excelente, es rápida para pasar archivos. Un poco pequeña de tamaño, para los que son olvidadizos tengan cuidado.

28.09.2026

J**S

Perfecta

Pequeña y súper rápida. Cuenta con puerto tipo C y tipo A.

29.08.2026

E**N

başarılı bir ürün

Çok küçük ve canavar gibi hızlı uzun süreli işler yapmazsanız ısınma olmuyor ben memnun kaldım

24.10.2026

G**I

Works fine, delivery fast!

Very handy having both a usb and type c port. Has a short installation app for phones but great for that easy access when it has two ports to plug and play. Very compact! So small in fact that I have to clip it with a keychain so it doesn't disappear on me, but that's a compliment!

20.04.2022

S**M

Quick delivery, as described

Arrived promptly and as described

7.05.2026

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