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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128GB Ultra Dual Drive Go USB Type-C Flash Drive, Black - SDDDC3-128G-G46

Product ID: 181769874

Details

Brand
Sandisk
Hardware Interface
USB 3.1 Type A
Memory Storage Capacity
128 GB
Special Feature
Reversible
Write Speed
150

⚡150MB/s high-speed USB 3.1 Gen 1

🔄2-in-1 reversible USB Type-C & Type-A

🖤128GB sleek black compact design

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€ 48.07

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Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Dual-speed storage that keeps your digital life moving!

LIGHTNING FAST TRANSFERS - Experience rapid 150MB/s read speeds that save you precious time on large files and backups.
COMPACT DURABLE ON THE GO - Ultra-lightweight 3.7g design with a protective swivel cover and keyring hole for ultimate portability.
TRUSTED RELIABILITY WARRANTY - Backed by SanDisk’s 5-year limited warranty and a 4.5-star rating from over 37,000 users.
SEAMLESS DUAL DEVICE COMPATIBILITY - Effortlessly switch between USB-C smartphones, tablets, Macs, and USB-A computers without adapters.
SMART BACKUP WITH SAN DISK MEMORY ZONE - Automatically free up space and back up photos, videos, and documents with the intuitive app.

The SanDisk 128GB Ultra Dual Drive Go is a sleek, reversible USB Type-C and Type-A flash drive designed for seamless file transfers between modern smartphones, tablets, Macs, and traditional computers. Featuring high-speed USB 3.1 Gen 1 performance with up to 150MB/s read speeds, it offers fast, reliable storage in a compact, durable design with a protective swivel cover and keyring hole. Enhanced by the SanDisk Memory Zone app, it enables automatic backups and easy space management, making it an essential tool for professionals on the move.

Specifications

ASIN	B07YYJRXQR
Additional Features	Reversible
Best Sellers Rank	#16 in USB Flash Drives
Brand	Sandisk
Color	Black
Compatible Devices	Mobile, Tablet
Connectivity Technology	USB
Customer Reviews	4.5 4.5 out of 5 stars (37,973)
Flash Memory Type	USB
Global Trade Identification Number	00619659177201
Hardware Connectivity Technology	USB Type A, USB Type C
Hardware Interface	USB 3.1 Type A, USB Type C
Item Dimensions D x W x H	0.34"D x 0.48"W x 1.75"H
Item Weight	3.7 Grams
Manufacturer	SanDisk
Memory Storage Capacity	128 GB
Mfr Part Number	SDDDC3-128G-G46
Model Name	Dual Drive Go USB Type C
Model Number	SDDDC3-0128G-G46
Read Speed	400 Megabytes Per Second
UPC	619659177201
Unit Count	1.0 Count
Warranty Description	5 year limited manufacturer
Write Speed	150

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