We tested a . Here are the results:
In the vast ecosystem of USB flash drive controllers, few names are as ubiquitous yet under-discussed as the Phison PS2251-19 . Often masked by its internal model number (PS2319 or “U19”), this chip is the silent workhorse behind countless affordable USB 3.2 Gen 1 drives from brands like Kingston, ADATA, Corsair, and Patriot. phison ps2251-19
The controller does not store your data; the NAND flash does. But the controller determines whether you can get that data back. On the PS2251-19, the answer is often, “Not easily.” Have a specific PS2251-19 failure you are troubleshooting? Leave a comment or check the user forums at USBDev.ru for firmware packs. Always back up important data before attempting any low-level tool. We tested a
For the average consumer, it is perfectly adequate as a movie transfer stick or a bootable OS installer. For power users, it will be a source of frustration due to abysmal sustained writes. The controller does not store your data; the NAND flash does
| Feature | | PS2251-09 (PS2309) | PS2251-17 (PS2317) | |---------|------------------------|------------------------|------------------------| | Interface | USB 3.2 Gen 1 | USB 3.2 Gen 1 | USB 3.2 Gen 2 (10Gbps) | | NAND Type | TLC/QLC | MLC/TLC | TLC (3D NAND only) | | AES Encryption | No | Yes (256-bit) | Yes (256-bit) | | Max Sequential Read | ~130 MB/s | ~200 MB/s | ~400 MB/s | | Typical Use | Budget promo drives | Business drives | High-performance | | Price Point | $0.80–$1.50 per controller | $2–$3 | $4–$6 |