Based on this product's specifications, here are some alternatives and similar models
Unify RJ45 Y-Cable for X3R X5R SLAV16R (MPN L30251-U600-A844) — Ethernet splitter/extension
Summary description:
Unify RJ45 Y-cable (MPN L30251-U600-A844) designed for use with Unify X3R, X5R and SLAV16R devices. Provides a Y-shaped RJ45 connection to split or extend Ethernet/voice lines between compatible network endpoints. Suitable for installations requiring parallel connectors or cable routing flexibility. Helps simplify wiring and maintain compatibility with supported Unify hardware.