The early model Eee PCs use a solid-state drive for storage (instead of a hard drive), which consumes less power when in use, allows the device to boot faster, generates no noise, and is less susceptible to mechanical shock damage than hard drives. A down side of SSD storage (flash memory) is that an individual sector can only be written about 100,000 times. This problem can be partially mitigated by intelligent wear leveling, resulting in a MTBF comparable to conventional platter-based hard drives.
In the 2 GB and 4 GB models of the 700 series of the Eee PC, the SSD is permanently soldered to the board, to reduce manufacturing costs[citation needed]. In the 8 GB model, the SSD is a card connected via the internal PCI Express Mini Card connector, leaving the original SSD area on the motherboard empty.
The Eee PC 900 comes with a removable PCI Express Mini SSD module, with or without four additional 1 GB memory chips soldered on the main board. Different models come with different-sized SSDs. One Linux version has 4 GB, an XP version has 8 GB, and all remaining ones (XP or Linux) have 16 GB.
The Eee PC 1000 uses an 8 GB internal SSD, with a 32 GB PCI Express Mini SSD module for a total of 40 GB.
Some models, such as the 1000H and 904HD do not have a SSD, and instead have a SATA internal hard drive of either 80 or 160 GB, which can be upgraded by the user.
All Eee PC models also include a memory card reader, supporting SD, SDHC and MMC cards for additional storage while the Eee pc S101 also has support for Memorystick and MS-PRO.
Eee PC 1004DN is the first model with a Super-Multi optical disc drive (ODD) that reads and writes data to DVD or Compact Disc
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