| sd4b | 4 GB SD card |
|---|---|
| Status | active |
| Part numbers | sd4b = 4 GB SD card, pSLC flash, RoHS compliant |
| Spec | 4 GB mSATA SSD, Phison controller, MLC NAND flash operated in pseudo SLC mode |
| Use with | apu1..4 series system boards |
| Update | Upcoming production batches (from 5/2018) will NOT support CPRM (content protection for removable media). |
| About pSLC | pSLC / pseudo SLC means that MLC flash (2 bits per cell, 4 voltage levels) is used in SLC mode (1 bit per cell, 2 voltage levels). This reduces capacity by half, but ensures better endurance and write performance. |
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