NS4-V2-TB 4-port serial to Ethernet module development board dedicated test kit with USB-to-TTL
[Interface signal]：Ethernet
[Number of serial ports]：4
[Operating voltage]： DC 3.0-5.5V
[Size]：89*49mm
[Product weight]：32.3±1g
[Introduction]：The NS4-V2-TB Ethernet module test kit includes a built-in USB-to-TTL converter (only one channel is built-in, switchable via a jumper), enabling quick debugging without an external converter. The reset and factory reset pins are exposed for external buttons, and all module function pins are exposed for convenient external debugging.
Official Store
| Serial number | name | illustrate |
| 1 | RESTORE | Restore factory settings button: Press this button for 5 to 10 seconds when the device is powered on to restore the device to factory settings; if you hold this button down and then power on the module, the module will enter upgrade mode. |
| 2 | GND | Ground wire |
| 3 | jumper cap | Connect the module to the data8_led indicator light through the jumper cap |
| 4 | jumper cap | Connect the module to the link8_led indicator light through a jumper cap |
| 5 | jumper cap | Connect the module to the data7_led indicator light through the jumper cap |
| 6 | jumper cap | Connect the module to the link7_led indicator light through the jumper cap |
| 7 | jumper cap | Connect the module to the data6_led indicator light through the jumper cap |
| 8 | jumper cap | Connect the module to the link6_led indicator light through a jumper cap |
| 9 | jumper cap | Connect the module to the data5_led indicator light through the jumper cap |
| 10 | jumper cap | Connect the module to the link5_led indicator light through a jumper cap |
| 11 | link5_led | Channel 5 link connection indicator |
| 12 | data5_led | Channel 5 data sending and receiving indicator |
| 13 | link6_led | Channel 6 link connection indicator |
| 14 | data6_led | Channel 6 data sending and receiving indicator |
| 15 | link7_led | Channel 7 link connection indicator |
| 16 | data7_led | Channel 7 data sending and receiving indicator |
| 17 | link8_led | Channel 8 link connection indicator |
| 18 | data8_led | Channel 8 data sending and receiving indicator |
| 19 | Ethernet interface | Support 10M/100M |
| 20 | data4_led | Channel 4 data sending and receiving indicator |
| 21 | link4_led | Channel 4 link connection indicator |
| 22 | data3_led | Channel 3 data sending and receiving indicator |
| 23 | link3_led | Channel 3 link connection indicator |
| 24 | data2_led | Channel 2 data sending and receiving indicator |
| 25 | link2_led | Channel 2 link connection indicator |
| 26 | data1_led | Channel 1 data sending and receiving indicator |
| 27 | link1_led | Channel 1 link connection indicator |
| 28 | jumper cap | Connect the module to the link1_led indicator light through a jumper cap |
| 29 | jumper cap | Connect the module to the data1_led indicator light through the jumper cap |
| 30 | jumper cap | Connect the module to the link2_led indicator light through a jumper cap |
| 31 | jumper cap | Connect the module to the data2_led indicator light through the jumper cap |
| 32 | jumper cap | Connect the module to the link3_led indicator light through a jumper cap |
| 33 | jumper cap | Connect the module to the data3_led indicator light through the jumper cap |
| 34 | jumper cap | Connect the module to the link4_led indicator light through a jumper cap |
| 35 | jumper cap | Connect the module to the data4_led indicator light through the jumper cap |
| 36 | GND | Ground wire |
| 37 | NRST | Module reset button, press to restart |
| 38 | jumper cap | Connect the module and the network cable through the jumper cap to the indicator light |
| 39 | NET | Network cable connection indicator: Connected and always on |
| 40 | POWER | Power indicator: always on when powered on |
| 41 | jumper cap | Output 3.3V |
| 42 | jumper cap | Provide 5V power to the module through the jumper cap connection |
| 43 | GND | Ground wire |
| 44 | RXD5 | Serial port 5 receives data. When testing this channel, you need to use jumper caps to short-circuit RXD5 and TXD5 respectively, and disconnect the other channels. |
| 45 | TXD5 | Serial port 5 sends data. When testing this channel, you need to use jumper caps to short RXD5 and TXD5 respectively, and disconnect the other channels. |
| 46 | RXD4 | Serial port 4 receives data. When testing this channel, you need to use jumper caps to short RXD4 and TXD4 respectively, and disconnect the other channels. |
| 47 | TXD4 | Serial port 4 sends data. When testing this channel, you need to use jumper caps to short RXD4 and TXD4 respectively, and disconnect the other channels. |
| 48 | RXD1 | Serial port 1 receives data. When testing this channel, you need to use jumper caps to short-circuit RXD1 and TXD1 respectively, and disconnect the other channels. |
| 49 | TXD1 | Serial port 1 sends data. When testing this channel, you need to use jumper caps to short-circuit RXD1 and TXD1 respectively, and disconnect the other channels. |
| 50 | RXD6 | Serial port 6 receives data. When testing this channel, you need to use jumper caps to short-circuit RXD6 and TXD6 respectively, and disconnect the other channels. |
| 51 | TXD6 | Serial port 6 sends data. When testing this channel, you need to use jumper caps to short RXD6 and TXD6 respectively, and disconnect the other channels. |
| 52 | RXD7 | Serial port 7 receives data. When testing this channel, you need to use jumper caps to short-circuit RXD7 and TXD7 respectively, and disconnect the other channels. |
| 53 | TXD7 | Serial port 7 sends data. When testing this channel, you need to use jumper caps to short RXD7 and TXD7 respectively, and disconnect the other channels. |
| 54 | RXD2 | Serial port 2 receives data. When testing this channel, you need to use jumper caps to short-circuit RXD2 and TXD2 respectively, and disconnect the other channels. |
| 55 | TXD2 | Serial port 2 sends data. When testing this channel, you need to use jumper caps to short-circuit RXD2 and TXD2 respectively, and disconnect the other channels. |
| 56 | RXD8 | Serial port 8 receives data. When testing this channel, you need to use jumper caps to short RXD8 and TXD8 respectively, and disconnect the other channels. |
| 57 | TXD8 | Serial port 8 sends data. When testing this channel, you need to use jumper caps to short RXD8 and TXD8 respectively, and disconnect the other channels. |
| 58 | RXD3 | Serial port 3 receives data. When testing this channel, you need to use jumper caps to short-circuit RXD3 and TXD3 respectively, and disconnect the other channels. |
| 59 | TXD3 | Serial port 3 sends data. When testing this channel, you need to use jumper caps to short-circuit RXD3 and TXD3 respectively, and disconnect the other channels. |
| 60 | GND | Ground wire |
Disclaimer:Strictly prohibited for military or life-safety use. Any violation shall be solely at the user's own risk.