Based on this product's specifications, here are some alternatives and similar models
bkl electronic Verbindungsteil 2900016 — connection adapter for network equipment accessories
Summary description:
Verbindungsteil 2900016 from bkl electronic is a connection adapter designed as an accessory for network equipment. Supplied under MPN 2900016 and EAN 4011376762863, it serves to join or interface compatible components in cabling and mounting setups. Use cases include extending connections or adapting interfaces in professional networking and rack installations.