Based on this product's specifications, here are some alternatives and similar models
Eaton Relay Card-MS interface cards/adapter Internal Serial
Summary description:
The Eaton Relay Card-MS is an internal serial interface card designed for wired connectivity. It is compatible with Eaton 5P, 5PX, 9SX, 9PX, 9E, 93PM, 93PS, 91PS, 93PS Marine, RELAY-MS models. The card features a multicolour design and dimensions of 66 mm width, 132 mm depth, and 132 mm height, ensuring a compact fit for various applications.