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  • 28
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    votes
Answer:
Differently than some answers to this.. the exact data in the A1 and A2 specs are this (directly from the sdcard.org website):
A1 1500 IOPS (Input-Outputs per second) random read, 500 IOPS random write, and 10MB/s Sustained Sequential Write.
A2 4000 IOPS random read, 2000 IOPS random write and 10MB/s Sustained Seq… see more
Differently than some answers to this.. the exact data in the A1 and A2 specs are this (directly from the sdcard.org website):
A1 1500 IOPS (Input-Outputs per second) random read, 500 IOPS random write, and 10MB/s Sustained Sequential Write.
A2 4000 IOPS random read, 2000 IOPS random write and 10MB/s Sustained Sequential Write.
Not sure where the other answers claim 100MB/s and higher, but these specs are from the website and anyone that believes more then these, are trusting in hearsay. They may have that high read speeds, but typically, the write speeds are the problems. Personally, I think the A2 specs are way better then the A1 since the devices can respond much quicker to changing Input and Output, and hence speed up their response times. see less
Differently than some answers to this.. the exact data in the A1 and A2 specs are this (directly from the sdcard.org website):
A1 1500 IOPS (Input-Outputs per second) random read, 500 IOPS random write, and 10MB/s Sustained Sequential Write.
A2 4000 IOPS random read, 2000 IOPS random write and 10MB/s Sustained Sequential Write.
Not sure where the other answers claim 100MB/s and higher, but these specs are from the website and anyone that believes more then these, are trusting in hearsay. They may have that high read speeds, but typically, the write speeds are the problems. Personally, I think the A2 specs are way better then the A1 since the devices can respond much quicker to changing Input and Output, and hence speed up their response times.

Calvin Thomas
· March 1, 2019
  • 20
    vote

    votes
Answer:
Yes. Actually, it is at least 3x more capable at U3 than Class 10. Class 10 is 10 MB per second. There is a new "U" series defined for video, that extends the old class system. U1 has the same rate as Class 10. U3 is 30 MB per second. The Extreme is a U3 card.
Amazon Customer
· July 29, 2017
  • 14
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    votes
Answer:
So, this came in the manufacturer's original sealed packaging. I was able to reformat it and install my own security protocols and download movies as well as television shows. I've had absolutely no issues with the product. The data loaded is recognized by Asus and HP laptops and a Panasonic TV. Again I would stick wit… see more So, this came in the manufacturer's original sealed packaging. I was able to reformat it and install my own security protocols and download movies as well as television shows. I've had absolutely no issues with the product. The data loaded is recognized by Asus and HP laptops and a Panasonic TV. Again I would stick with "Sold and shipped by Amazon. I don't know where or from whom the other reviewers purchased their item from. see less So, this came in the manufacturer's original sealed packaging. I was able to reformat it and install my own security protocols and download movies as well as television shows. I've had absolutely no issues with the product. The data loaded is recognized by Asus and HP laptops and a Panasonic TV. Again I would stick with "Sold and shipped by Amazon. I don't know where or from whom the other reviewers purchased their item from.
Derek F
· March 15, 2019
  • 8
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    votes
Answer:
Yes, It does 4K 60fps with no issues. I use it in my GoPro Hero 6 and have never had issues. Also works great for 2.7K 120fps.
User
· March 22, 2019
  • 4
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    votes
Answer:
Yes. The Nintendo Switch can handle up to 2TB. https://www.nintendo.com/switch/features/tech-specs/
Brayan Carrera
· July 4, 2019
  • 4
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    votes
Answer:
to legit to quit
Adam M.
· May 2, 2019
  • 3
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    votes
Answer:
I don’t understand the question. What does switch mean. I used this on a netbook PC that the card reader died on. I plug in micro SD card into adapter and plug into computer to have access to data on the SD card. That worked for me.
James Haber
· May 9, 2019
  • 1
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    votes
Answer:
Much more than 450 songs. I have over 1,000 mp3's on a 400GB card. A 1 terabyte card can hold approximately 250,000 MP3 files. (At 4 minutes per song, that's a million minutes of music, or 16,666 hours, or 694 days, or almost two whole years of uninterrupted listening pleasure.)
A. Pratt
· May 21, 2020
  • 1
    vote

    votes
Answer:
Yes, it doesn't have to be a Samsung card
Denis
· August 9, 2019
  • 1
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    votes
Answer:
Make sure to double check the maximum supported Size & your phones sd reader max read/write. Many phones I believe s8 not sure about s8+ (Apple Phone guy-boo me in your head—-Superior for Secure MDM MAM EMM & o365BP AzureAD Intuneallows iOS organization custom AppStore portal same as PC portal 4 LOB:Corp apps/Data/Up… see more Make sure to double check the maximum supported Size & your phones sd reader max read/write. Many phones I believe s8 not sure about s8+ (Apple Phone guy-boo me in your head—-Superior for Secure MDM MAM EMM & o365BP AzureAD Intuneallows iOS organization custom AppStore portal same as PC portal 4 LOB:Corp apps/Data/Update/Patch IT Admin 1 button pushes all Corp hw & E2E sec 4 biz data)

Anyway android Phone OS, especially previous year(s) models limit sd cards of any type to 128gb max size else will appear unreadable and anything faster than 100/100 is $$ in trash. High density SDs & High speeds are more for Local Net servers,PC laptops Desktop NAS/DAS/SoC/Routers & ITXpcs/eArc HDMI 2.1 48Gbps AVR HT receivers,UHD HDR10 DolbyVision Smart Blu-ray/NetStreamers/AppleTV,Roku Ultra,Chromecast Ultra,FireTV Cube/4K, Smart UHD 8k-4K HDR10 DolbyVision EliteMax 48bit 4:4:4 chroma @120hz 4K 60hz 8k QLED Samsung or new MicroLEDs/OLEDs/Plasma Android TV Nvidia Shield STBs etc usb 5:6GB uasp uart otg PCIe bus & 10GB, usb C/Thunderbolt 2-320-40GB Sata III-6gbps or Sata SAS (NL sata -12gbps) or new PCIe3.X readers (same modeling as read/write nvme ssds @ 2+gbps with Sw defined data centers available @ any residence w/ winServer2016 & 1 Dell PE R710 212gb Ram 2-xenon 8C 3.28ghz CPUS w/ VTx/HT + fully loaded front & backplanes & Risers + 4x1gb nic, 2x10GbE, 4xSFP (2-1.25gb,2-10GbE) Using SDN as a Virtual overlay of Physical network Topology All Net Router switches usg Proxies etc exist as logical abstract mirrors for intra VM Routing with HyperV shielded VMs Base bridge from phy hw to sw + Docker/Kubernetes MicroVirtualized containers or Linux “jails” sandboxes whatever the word choice: I have edge pro safe access switch L1-L4, bsd pfsense Edge Router/Proxy & vpn server 6 LAN Routers 2 sets of 3 bridged a lan Access Switch dell server, Aggregation switch, Admin PAM PC, core/distribution switch + 1 access switch on top 3 floors. Each has 4 backbone{trunk, uplinks) Ports either 40GB Fiber or 22.50 & 2 min 10GbEth Ports rest are 1gb or multigig(1gb,2.5gb,5gb,10GbE) LAN router groups have 1 sfp+ port each & each Router supports min 2 port link Aggregation for 10GB Fiber & 2gb eth + remains can be aggregated via lag & LACP @ LAN Edge Access switch where traffic further segments &groups by VLan-VXLAN-Ports/LACP because I have peR710,w/ 10 VMs, 4 DT servers + Admin & 4 LT, 6 SoC/board PCs 6 usb hdd, 6 DAS 4-6ssd/Black NAS 6bay 10GbEx2-4usb(2:10GB,2:6gb) 40 usb/sd cards-210slot usb mass data hubs,2x4usb&eth nic hub, 1 trip Display usb hub w/ eth all av & usb prts + card reader egpu & 55gb cat8 2000mhz eth & mm fiber on all DT server + 4x4:4 Asus pcie 3000AC WiFi + BT5.0 + 2-4gb nics per LT & usb 2200ac Receiving WiFi ext where needed + 2-7gbps wigig cards on Backup server
Point being it matters little where drives are physically placed & connected, vSAN/iSCSI win Storage spaces/ storage pools-arrays/logical drives amalgam of hw sw Raid also makes any networked device able to be placed in logical storage clusters Dell Server has 10 SAS 15k 600gb Enterprise drives & 10 NL 2 TB sata ssd 20 drives are 2 Raid 50 arrays contained in raid 10 master + readyboost & read/write flash caches (usb,SD,hw cache, ssds as cache on NAS or raid ctrl tieting etc) encrypting efs arxhives or sys img backups & storing key/cert vaulf CA & org media audio & uhd by genre/year this is where greater than 128sd usbs come into play & readyboot os distros (usb4sec,sd 4 secure filesysdir) things like that see less
Make sure to double check the maximum supported Size & your phones sd reader max read/write. Many phones I believe s8 not sure about s8+ (Apple Phone guy-boo me in your head—-Superior for Secure MDM MAM EMM & o365BP AzureAD Intuneallows iOS organization custom AppStore portal same as PC portal 4 LOB:Corp apps/Data/Update/Patch IT Admin 1 button pushes all Corp hw & E2E sec 4 biz data)

Anyway android Phone OS, especially previous year(s) models limit sd cards of any type to 128gb max size else will appear unreadable and anything faster than 100/100 is $$ in trash. High density SDs & High speeds are more for Local Net servers,PC laptops Desktop NAS/DAS/SoC/Routers & ITXpcs/eArc HDMI 2.1 48Gbps AVR HT receivers,UHD HDR10 DolbyVision Smart Blu-ray/NetStreamers/AppleTV,Roku Ultra,Chromecast Ultra,FireTV Cube/4K, Smart UHD 8k-4K HDR10 DolbyVision EliteMax 48bit 4:4:4 chroma @120hz 4K 60hz 8k QLED Samsung or new MicroLEDs/OLEDs/Plasma Android TV Nvidia Shield STBs etc usb 5:6GB uasp uart otg PCIe bus & 10GB, usb C/Thunderbolt 2-320-40GB Sata III-6gbps or Sata SAS (NL sata -12gbps) or new PCIe3.X readers (same modeling as read/write nvme ssds @ 2+gbps with Sw defined data centers available @ any residence w/ winServer2016 & 1 Dell PE R710 212gb Ram 2-xenon 8C 3.28ghz CPUS w/ VTx/HT + fully loaded front & backplanes & Risers + 4x1gb nic, 2x10GbE, 4xSFP (2-1.25gb,2-10GbE) Using SDN as a Virtual overlay of Physical network Topology All Net Router switches usg Proxies etc exist as logical abstract mirrors for intra VM Routing with HyperV shielded VMs Base bridge from phy hw to sw + Docker/Kubernetes MicroVirtualized containers or Linux “jails” sandboxes whatever the word choice: I have edge pro safe access switch L1-L4, bsd pfsense Edge Router/Proxy & vpn server 6 LAN Routers 2 sets of 3 bridged a lan Access Switch dell server, Aggregation switch, Admin PAM PC, core/distribution switch + 1 access switch on top 3 floors. Each has 4 backbone{trunk, uplinks) Ports either 40GB Fiber or 22.50 & 2 min 10GbEth Ports rest are 1gb or multigig(1gb,2.5gb,5gb,10GbE) LAN router groups have 1 sfp+ port each & each Router supports min 2 port link Aggregation for 10GB Fiber & 2gb eth + remains can be aggregated via lag & LACP @ LAN Edge Access switch where traffic further segments &groups by VLan-VXLAN-Ports/LACP because I have peR710,w/ 10 VMs, 4 DT servers + Admin & 4 LT, 6 SoC/board PCs 6 usb hdd, 6 DAS 4-6ssd/Black NAS 6bay 10GbEx2-4usb(2:10GB,2:6gb) 40 usb/sd cards-210slot usb mass data hubs,2x4usb&eth nic hub, 1 trip Display usb hub w/ eth all av & usb prts + card reader egpu & 55gb cat8 2000mhz eth & mm fiber on all DT server + 4x4:4 Asus pcie 3000AC WiFi + BT5.0 + 2-4gb nics per LT & usb 2200ac Receiving WiFi ext where needed + 2-7gbps wigig cards on Backup server
Point being it matters little where drives are physically placed & connected, vSAN/iSCSI win Storage spaces/ storage pools-arrays/logical drives amalgam of hw sw Raid also makes any networked device able to be placed in logical storage clusters Dell Server has 10 SAS 15k 600gb Enterprise drives & 10 NL 2 TB sata ssd 20 drives are 2 Raid 50 arrays contained in raid 10 master + readyboost & read/write flash caches (usb,SD,hw cache, ssds as cache on NAS or raid ctrl tieting etc) encrypting efs arxhives or sys img backups & storing key/cert vaulf CA & org media audio & uhd by genre/year this is where greater than 128sd usbs come into play & readyboot os distros (usb4sec,sd 4 secure filesysdir) things like that

TechnologicalPhilosopher
· March 11, 2019