SanDisk 4783487 Ultra 32GB SDHC UHS-I Memory Card

Name: SanDisk 4783487 Ultra 32GB SDHC UHS-I Memory Card
Brand: SanDisk
SKU: 4783487

Overview

The SanDisk Ultra 32GB SDHC UHS-I card (model SDSDUNB-032G) is a Class 10, UHS-I Speed Class 1 card with a rated sequential read speed of 48 MB/s. In the context of the UHS-I specification's 104 MB/s theoretical ceiling, this card occupies the reliable mid-range — fast enough to satisfy Class 10's 10 MB/s minimum sustained write requirement for HD video, and quick enough at reads to offload a full card in roughly 11 minutes to a USB 3.0 reader. The SDHC designation caps capacity at 32GB — the standard format supported by all SD-compatible devices — and the 262-pin form factor fits the full-size SD slot found in most cameras, camcorders, and laptops with built-in readers.

This card is purpose-built for compact to mid-range cameras and camcorders where the host device's own write pipeline is the throughput ceiling — a class of equipment that cannot leverage the speed advantages of V60 or V90 cards anyway. For casual photographers, travel shooters, and anyone recording 1080p footage, the combination of 32GB capacity and Class 10 performance covers the use case without overpaying for speed headroom that won't be utilized. Where it shows its age is in workflows involving burst shooting on higher-megapixel sensors, 4K video, or frequent large-batch offloads — scenarios where the card's unlisted write speed and 48 MB/s read rate become tangible bottlenecks. For its intended deployment in entry-to-mid-tier capture hardware, it delivers reliable, predictable performance.

Key Features

SanDisk Ultra 32GB Class 10 SDHC UHS-1 Memory Card (retail package)

1 year factory warranty

UHS-1 Class 10 Memory Card with read speed up to 48mb/s

Listing includes: 1x Memory Card

Specifications

Capacity

32GB

Memory Type

SDHC

Speed Class

Class 10

UHS Speed Class

UHS-I (U1)

Read Speed

Up to 48 MB/s

Brand

SanDisk

Model

SDSDUNB-032G

Warranty

1 year factory warranty

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Pros & Cons

👍 Pros

48 MB/s read speed meaningfully reduces file transfer time compared to Class 4 and Class 6 predecessors
32GB capacity handles hundreds of RAW images or hours of 1080p video on a single card
Class 10 minimum write speed meets the sustained throughput requirement for HD video recording without dropped frames
SDHC UHS-I interface is universally supported across point-and-shoot cameras, camcorders, and card readers
SanDisk's manufacturing consistency results in reliable cell-level performance across the rated capacity

👎 Cons

48 MB/s read speed is significantly below current UHS-I top performers, which now exceed 150 MB/s on the same bus
Write speed is not rated on this listing — actual write performance may fall well below the 48 MB/s read figure, limiting burst capture depth on fast-shooting cameras
Not rated for V30 video speed class, meaning 4K recording reliability is not guaranteed on cameras that require it
32GB capacity fills quickly in RAW+JPEG shooting workflows on higher-megapixel sensors
One-year warranty is shorter than the lifetime limited warranty offered on SanDisk's premium card tiers

Frequently Asked Questions

What does Class 10 UHS-I mean for this card's minimum write speed?

Class 10 guarantees a minimum sustained write speed of 10 MB/s, which is the baseline required for continuous HD video recording. The UHS-I bus interface supports up to 104 MB/s theoretical throughput, though this card's rated read speed of 48 MB/s indicates it operates in the lower-performance tier of UHS-I — sufficient for sequential capture but not suited for burst-heavy shooting.

Will this card work in a UHS-II camera slot?

Yes, with a caveat. UHS-II slots are backward-compatible with UHS-I cards. However, the card will operate at UHS-I speeds — you will not gain any UHS-II throughput advantage. Conversely, using a UHS-II card in a UHS-I device also falls back to UHS-I speeds.

Is 32GB enough capacity for modern video recording?

At 1080p with typical H.264 compression (around 20 Mbps), 32GB stores approximately 3.5 hours of footage. For 4K recording, which requires 60–100 Mbps depending on codec, the card may fill in under an hour and its write speed may not sustain 4K capture reliably. This card is optimized for 1080p and lower-resolution workflows.

What is the rated read speed, and why does it matter more than write speed for some users?

The rated read speed is 48 MB/s. For users who primarily care about offloading files from camera to computer, read speed determines transfer time. At 48 MB/s, a full 32GB card copies in approximately 11 minutes — faster than older Class 4 or Class 6 cards, but significantly slower than current-gen V30 or V60 cards that exceed 100 MB/s reads.

Does this card include any data recovery software or warranty beyond one year?

The card ships with a one-year factory warranty from SanDisk. No additional data recovery software is listed as included in the retail package. SanDisk's RescuePRO Deluxe software has historically been bundled with higher-tier Ultra and Extreme cards but is not confirmed for this listing.