SIM&SD
From ESS-WIKI
EPC-R5710 support 1*standard SIM socket and 1*Micro SD socket at the rear side.
SIM
| Pin | Pin Name | Pin | Pin Name |
| C1 | SIM_PWR | C2 | SIM_RST |
| C3 | SIM_CLK | CD | NC |
| C5 | GND | C6 | NC |
| C7 | SIM_DATA | -- | -- |
SD
| Pin | Pin Name | Pin | Pin Name |
| 1 | SDCARD_DAT2 | 2 | SDCARD_DAT3 |
| 3 | SDCARD_CMD | 4 | +V3.3_SD |
| 5 | SDCARD_CLK | 6 | GND |
| 7 | SDCARD_DAT0 | 8 | SDCARD_DAT1 |
| 9 | SD2_CD# | -- |