![sandisk secure erase sandisk secure erase](https://cdn.transcend-info.com/supports/images/dlcenter/6_Erase.png)
#Sandisk secure erase pro#
SanDisk's support page still doesn't even acknowledge that the Extreme Pro USB drives even exist. I've attempted to look into it again recently. Now three years old, the drive seems to still be excessively finicky.
![sandisk secure erase sandisk secure erase](https://i1.wp.com/www.thessdreview.com/wp-content/uploads/2020/10/SanDisk-Extreme-Portable-1TB-SSD-TxBench.png)
I received a response back saying that per my screenshots, I was getting the "optimum speed" from the drive which was good enough for them to close my ticket.
![sandisk secure erase sandisk secure erase](https://www.blognone.com/sites/default/files/externals/6fbc0f45b4b5aa47c3d180a1d14723c8.jpg)
Even if this was expected behavior for the drive. I asked support if I should expect to see TRIM working (it wasn't clear if it was), if there were any firmware updates I could perform, if there was a special way to format it, or anything I was doing incorrectly that would cause these slow speeds. At times, I was even seeing poor speeds from the drive with it completely empty. I found that completely formatting the drive would improve both up to 340 MB/s and 310 MB/s respectively but filling up the drive even 20% would cause speeds to quickly drop way back down. I initially saw my drive easily hit the advertised speeds of 400+ MB/s reads and 300+ MB/s writes pretty continually.Īfter 10 months of light use, I opened a ticket with SanDisk support in September 2018 reporting diminished read speeds of 273 MB/s and heavily diminished write speeds at 53MB/s. I've been seeing poor performance on my SanDisk Extreme Pro 256GB USB drive since its initial purchase in November 2017.