| 100Base T1, No FIU | 4 Ports | — | — | Cat 6 | RJ45 | PXIe-8521 | Product PN |
| 1000Base T1, No FIU | 4 Ports | — | — | Cat 6 | RJ45 | PXIe-8522 | Product PN |
| 100/1000 Base T1, No FIU | 4 Ports, MACsec Support (100M only) | — | — | Cat 6 | RJ45 | PXIe-8523 | Product PN |
| 2.5G,5G,10G Base T1, No FIU | 4 Ports, MACsec Support, TC10 Support | — | — | Coax | H-MTD Z (f) | PXIe-8520 + IVN8533 | Product PN |
| 100Base T1, FIU | 4 Ports + FIU | AL-2010 | B062 (C067) | RJ45 Cut in half and wired in (100M in rear out front) + Molex | RJ45 | PXIe-8521 | 86XXXX-XX |
| 1000Base T1, FIU | 4 Ports + FIU | B095 (AL-2011) AE extension | B062 (C067) | Custom – Twisted Pair to 9-pin dSub on RTI (1G in and out rear of SLSC) + Molex | RJ45 | PXIe-8522 | 86XXXX-XX |
| 100/1000 Base T1, FIU | 4 Ports, MACsec Support (100M only) + FIU | B095 (AL-2011) AE extension | B062 (C067) | Custom – Twisted Pair to 9pin dSub on RTI (1G in and out rear of SLSC) + Molex | RJ45 | PXIe-8523 | 86XXXX-XX |