SD card reader comparison table
PCI express mini card | 
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| Model Name  | 
      Photo | Size | Interface | Controller | SD Slot | SDHC | SDXC | SD Spec. | SDIO | MMC | 
| MR04 | ![]()  | 
      Full size mPCIe | USB  2.0  | 
      Genesys GL823 | SD | Yes | workable | SD 2.0 | No | Yes | 
| MR04R | ![]()  | 
      Full size mPCIe | PCIe  x1  | 
      RICOH R5U230 | SD | Yes | workable | SD HOST 2.0 | SDIO 2.0 | Yes | 
| MR09R Discontinued 停產品 終息製品  | 
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      Full size mPCIe | PCIe  x1  | 
      RICOH R5U230 | Micro SD | Micro SDHC | workable | SD HOST 2.0 | SDIO 2.0 | No | 
| MR14 | ![]()  | 
      Half size mPCIe | USB  2.0  | 
      Alcor AU6431 | Micro SD | Micro SDHC | UHS-1 | SD 3.0 | No | No | 
| MR15 | ![]()  | 
      Half size mPCIe | USB  2.0 (MiniCard 1.2)  | 
      Alcor AU6472 | Dual Micro SD | Micro SDHC | UHS-1 | SD 3.0 | No | No | 
| MR16 Discontinued 停產品 終息製品  | 
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      Full size mPCIe | mSATA  | 
      DB DB300 | SD | Yes | UHS-1 | SD 3.0 | No | Yes | 
| MR17 Discontinued 停產品 終息製品  | 
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      Half size mPCIe | mSATA (mini-SATA)  | 
      Dual Micro SD | Micro SDHC | UHS-1 | SD 3.0 | No | ||
Expresscard | 
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| Model Name  | 
      Photo | Size | Interface | Controller | SD Slot | SDHC | SDXC | SD Spec. | SDIO | MMC | 
| EC220 | ![]()  | 
      Expresscard 34mm | PCIe  x1  | 
      RICOH R5U220 | SD | Yes | UHS-1 | SD HOST 3.0 | SDIO 2.0 | Yes | 
| EC220-IO | ![]()  | 
      Expresscard 34mm | PCIe  x1  | 
      RICOH R5U220 | SD | SDHC (LS) | UHS-1 (LS) | SD HOST 3.0 | SDIO 2.0 | Yes | 
| EC230 | 
      ![]()  | 
      Expresscard 34mm | PCIe  x1  | 
      RICOH R5U230 | SD | Yes | workable | SD HOST 2.0 | SDIO 2.0 | Yes | 
| EC7836-U2 | ![]()  | 
      Expresscard 34mm | USB2.0  | 
      Skymedi SK7836 | SD | Yes | UHS-1 | SD 3.0 | No | Yes | 
| EC7836-U3 | ![]()  | 
      Expresscard 34mm | USB3.0  | 
      Skymedi SK7836 | SD | Yes | UHS-1 | SD 3.0 | No | Yes | 
| EC822 | 
      ![]()  | 
      Expresscard 34mm | USB2.0  | 
      Genesys GL822 | SD | Yes | UHS-1 | SD 3.0 | No | Yes | 
| EC823 | 
      ![]()  | 
      Expresscard 34mm | USB2.0  | 
      Genesys GL823 | SD | Yes | Compatible | SD 2.0 | No | Yes | 
Others | 
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| Model Name  | 
      Photo | Size | Interface | Controller | SD Slot | SDHC | SDXC | SD Spec. | SDIO | MMC | 
| SDCBA-C01 | ![]()  | 
      PCMCIA Card | PCI  | 
      RICOH R5C833 | SD | Yes | No | SD HOST 2.0 | SDIO 2.0 | Yes | 
| MP230 | ![]()  | 
      PCI-E x1 Board | PCIe x1  | 
      RICOH R5U230 | SD | Yes | Compatible | SD HOST 3.0 | SDIO 2.0 | Yes | 
| SSDMD | 
      ![]()  | 
      2.5” HDD | SATA  | 
      D-broad DB300 | SD | Yes | UHS-1 | SD HOST 3.01 | No | No | 
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| SD card reader comparison | |||
      
      
      














