What does the A2 rating mean, and does it matter for my use?
A2 is an application-performance class for small random reads and writes, the pattern generated by apps and games, as distinct from the sequential speed used for video. It matters if you plan to run apps or games directly from the card; for pure video recording, the V30 sequential rating is more relevant.
Do I need a special reader to get the full 170 MB/s read speed?
Yes. Silicon Power states that the 170 MB/s read speed requires a DDR200-enabled card reader or device. A reader or device that does not meet the DDR200 specification will still work, but at reduced speed.
Is the 1TB card the same speed as the smaller capacities?
No. The 128GB card is rated lower, at 160 MB/s read and 120 MB/s write. The 256GB and 512GB cards share 170 MB/s read and 150 MB/s write, and only the 1TB card reaches 160 MB/s write alongside the same 170 MB/s read.
Will my device support the 1TB capacity?
Not necessarily. Silicon Power states directly that not all devices support 1TB capacity or microSDXC cards in general. Check your device's manual or specification sheet for microSDXC and high-capacity card support before buying the 1TB version.
Is the CR30M actually waterproof and shockproof?
Silicon Power states water, drop, temperature, and X-ray resistance, but is explicit that these claims are based on controlled testing conditions, provide limited protection, and cannot guarantee survivability under all circumstances or intentional misuse. Treat it as resistant to everyday accidents, not indestructible.
Can I use this card in my drone or GoPro-style action camera?
Silicon Power markets the CR30M specifically for drones and GoPro-style cameras, and its V30 video rating and sequential write speeds suit 4K recording. Confirm your specific device's supported card list and recording bitrate against the card's rated write speed for the capacity you choose.
Does this card work in handheld gaming consoles?
Silicon Power markets the CR30M for handheld gaming devices, and the A2 rating is aimed at the kind of small random reads games generate when running from a card. Confirm your specific console's supported card types and capacity limits before buying.
What is dual ECC and why does it matter?
ECC stands for error-correcting code. Silicon Power specifies a dual ECC function for automatic error correction, intended to help maintain data integrity as the card is read and written over its service life.
How long is the warranty, and what does it cover?
The CR30M carries a 10-year limited warranty. Silicon Power states that warranty coverage applies only to defects attributable to manufacturing, and that damage from improper use or environmental factors voids the warranty; see Silicon Power's Warranty Policy for exact terms.
Where can I find the official datasheet and part numbers?
Silicon Power's official product page lists part numbers by capacity, with and without a full-size SD adapter (for example SP128GBSTXLA2V1C for 128GB without adapter), and offers a PDF datasheet under File Download.