Review on 💾 512GB Micro SD Card Memory Card with Adapter - High-Speed 100MB/s, Class 10, U1, Full HD Support, A1, 512GB Ultra microSDXC UHS-I Memory Card by Robert Corral

When I received this SD card (circa March 2016), I knew immediately that it wasn't a U3 card. It was too slow. I kept it anyway as it was still a great price for a 128GB card. (That was lower than the current price at the time of this review.) In any case, it looks like I don't have 128GB either. It seems closer to 32GB according to some reviewers. I've learned my lesson. Whenever you buy a new SD card, test it first (while you can still return it)! The test results are listed below: FAKEFLASHTEST v1.0.9 [SSi]DRIVE 7 - 119.2 GB Multi Card Reader FFT - Quick Size Test (Destructive) E: (Untitled) DRIVE 7 - 119.2 GB Multi Card Reader Hard Drive 75% complete – 5 minutes left. 4 sec 10% done - 3 minutes left. 45 sec 15% done - 4 minutes left. 49 sec 20% done - 4 minutes left. 48 sec 25% completion - 5 min 0 sec 30% completion left - 4 min 59 sec 35% completion left - 4 min 48 sec 40% completion left - 4 min 30 seconds. - 4 min 6 sec remaining, 60% complete - 4 min 1 sec remaining, 65% complete - 3 min 49 sec remaining, 70% complete - 3 min 32 sec remaining, 75% complete - 3rd Min 9 sec remaining, WRITE ERROR remaining : Sector = 5533211480 % complete - 3 min 53 sec 85% complete Remaining - 2 min 59 sec 90% complete Remaining - 2 min 2 sec 95% complete Remaining - 1 min 3 sec 100% complete Remaining - 0 min 1 sec Remains to read blocks of markers. 5% complete - 0 min 38 sec 10% left - 0 min 27 sec 15% complete left - 0 min 29 sec min 21 sec 30% complete remaining - 0 min 21 sec 35% complete Remaining - 0min 19sec 40% Complete Remaining - 0min 17sec 45% Complete Remaining - 0min 16sec 50% Complete Remaining - 0min 14sec 55% Remaining % Complete - 0min 14 With 60% Complete Remaining - 0 min 12 sec 65% Complete Remaining - 0 min 11 sec 70% Complete Remaining - 0 min 9 sec 75% Complete Remaining - 0 min 8 sec 80% Complete Remaining - 0 min 6 sec 85% complete - 0 min 5 sec remaining 90% complete - 0 min 3 sec remaining 95% complete - 0 min 2 sec remaining Memory tested in blocks of 25600 sectors. BAD STORAGE from sector 53463314 (26105.1337MB) to sector 55357714 (27030.1337MB) WARNING: No memory was detected in one or more locations. The test lasted 1311 seconds. *** FAILED *** THE DEVICE HAS DUPLICATES OR BAD BLOCKS IN THE DEVICE! Recommended maximum partition size: 26,092.6337 MB (approximately last good sector = 53463314) Disconnect and reconnect the drive, then reformat using Windows or RMPrepUSB.