| Advantech | BB-USPTL4 is a USB to Serial by Advantech with RS-422, RS-485 interface. | 1.619 | $70.69 | ACTIVE | |
| Advantech | BB-USPTL4-LS is a USB to Serial by Advantech with RS-422, RS-485 interface. | 1.639 | $85.45 | ACTIVE | |
| Advantech | BB-USR604 is a USB to Serial by Advantech with RS-232, RS-422, RS-485 interface. | 1.514 | $1240.00 | ACTIVE | |
| Banner Engineering | Interface Modules Sure Cross 1-Wire Serial to USB Adapter for Sensor Configuration Tool | 1.506 | $392.00 | ACTIVE | |
| Moxa | CA-104 by Moxa®, with PC/104 interface, rated for 0°C ~ 55°C, part of the CA-104 series. | 1.501 | $350.00 | ACTIVE | |
| Moxa | CA-108 by Moxa®, 5V supply voltage, with PC/104 interface, in Retail Package package, rated for 0°C ~ 55°C, part of the CA-108 series. | 1.054 | $492.40 | ACTIVE | |
| Moxa | CA-132I by Moxa®, 5V supply voltage, with PC/104 interface, in Retail Package package, rated for 0°C ~ 55°C, part of the CA-132/132I series. | 1.502 | $475.72 | ACTIVE | |
| Connective Peripherals | CAN-DP is a Interface by Connective Peripherals. | 2.866 | $115.68 | ACTIVE | |
| Advantech | Interface Modules CAN OPTICAL REPEATER W/TB | 1.507 | $374.00 | ACTIVE | |
| Moxa | CB-114 by Moxa®, 5V supply voltage, with PC/104 interface, in Retail Package package, rated for 0°C ~ 55°C, part of the CB-114 series. | 1.501 | $881.76 | ACTIVE | |
| Brainboxes | INDUSTRIAL ISOLATED RS232 BOOSTE | 1.380 | $757.40 | ACTIVE | |
| Brainboxes | Interface Modules PCI 2xRS422/485 15MBaud | 1.521 | $1189.08 | ACTIVE | |
| Carlo Gavazzi | Interface Modules CERTUS DEVICENET INDUSTRIAL FIELDBUS EXPANS.UNIT | 2.208 | $2370.08 | ACTIVE | |
| Carlo Gavazzi | Interface Modules CERTUS ETHERCAT INDUSTRIAL FIELDBUS EXPANSION UNIT | 800 | $2370.08 | ACTIVE | |
| Littelfuse | Interface Modules ON/OFF TIMING MODULE | 1.503 | $783.50 | ACTIVE | |
| Littelfuse | Interface Modules ETHERNET CIO MODULE FOR MODBUS | 1.443 | $1365.96 | ACTIVE | |
| Littelfuse | MODBUS CIO MODULE FOR USE WITH | 1.501 | $653.50 | ACTIVE | |
| Littelfuse | PROFIBUS CIO MODULE FOR USE WI | 1.710 | $1533.48 | ACTIVE | |
| Eurotech | Interface Modules PC/104 MVB Interface Module Device | 2.407 | $1462.00 | ACTIVE | |
| Carlo Gavazzi | Interface Modules CERTUS PROFIBUS DP INDUSTRIAL FIELDBUS EXPANS.UNIT | 2.600 | $2811.06 | ACTIVE | |