| OTG | USB 3.1/3.0 | USB 2.0 | ||||||||||
| Model |  RDA2 |
 RDC2 |
 RDP9 |
 RDC8 |
 RDF9 |
 RDF2 |
 RDF8 |
 RDF5 |
 RDP8 |
 RDP5 |
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| USB Connector | Lightning | Type-C (USB2.0) | Micro-B (USB2.0) | Type-C | Type-A | Type-A | Type-A | Type-A | Type-A | Type-A | ||
| Slot | SD microSD |
SD microSD USB |
SD microSD USB |
SD microSD CompactFlash Memory Stick |
SD microSD CompactFlash Memory Stick |
CFast | SD microSD CompactFlash Memory Stick |
SD microSD |
SD microSD CompactFlash Memory Stick |
SD microSD |
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| Supported Cards | SD | UHS-II | - | - | - | - |  |
- | - | - | - | - |
| UHS-I and below | |
|
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|
|
- | |
|
|
|
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| microSD | UHS-I and below | |
|
|
|
|
- | |
|
|
|
|
| CompactFlash | UDMA5 and below | - | - | - | |
|
- | |
- | |
- | |
| UDMA7 & UDMA6 | - | - | - | |
|
- | |
- | - | - | ||
| CFast | CFast 2.0 and below | - | - | - | - | - | |
- | - | - | - | |
| Memory Stick | - | - | - | |
|
- | |
- | |
- | ||
| MMC | - | - | - | - | - | - | - | - | |
- | ||
| Color | White | Black | Black | Black | Black | Black | Black, white | Black, white, pink | Black, white | Black, white | ||
| Warranty | Two-year Limited Warranty | |||||||||||