# Module Combinations

Line modules can only be paired with specific IOA, SFM, and SRP modules. See Table 28 for valid combinations.

Table 28: Module Combinations

Modules | ES2 4G LM | ES2 10G UPLINK LM | ES2 10G LM | ES2 10G ADV LM
--- | --- | --- | --- | ---
SRP Modules |  |  |  |
SRP-100 This module is only supported in the E320 router. | √ | √ | √ | –
SRP-120 This module is only supported in the E120 router. | √ | √ | √ | √
SRP-320 | √ | √ | √ | √
SFM Modules |  |  |  |
SFM-100 This module is only supported in the E320 router. | √ | √ | √ | –
SFM-120 This module is only supported in the E120 router. | √ | √ | √ | √
SFM-320 | √ | √ | √ | √
IOA Modules |  |  |  |
ES2-S1 GE-4 | √ | – | – | –
ES2-S1 GE-8 | √ | – | √ | √
ES2-S3 GE-20 | – | – | √ | √
ES2-S1 10GE | √ | – | – | –
ES2-S2 10GE PR | – | √ | √ | √
ES2-S1 OC3-8 STM1 ATM | √ | – | – | –
ES2-S1 OC12-2 STM4 ATM | √ | – | – | –
ES2-S1 OC12-2 STM4 POS | √ | – | – | –
ES2-S1 OC48 STM16 POS | √ | – | – | –
ES2-S1 REDUND | √ | √ | √ | √
ES2-S1 SERVICE | √ | – | – | √