Based on this product's specifications, here are some alternatives and similar models
Riser Card INTEL FCP2URISER1SW PCIe 3.0
Summary description:
INTEL FCP2URISER1SW is a PCIe 3.0 riser card designed to expand server or workstation PCI Express connectivity. It provides an additional PCIe slot interface for compatible systems, enabling installation of extra expansion cards where motherboard space or slot orientation is limited. Suitable for upgrades, maintenance and system customization in data centers and professional environments.