StarTech.com PCI Express Riser Card x8 to x16 Left Slot Adapter for 1U Servers (PEX8TO16R) Add a PCI Express card to almost any 1U chassis at x8 PCIe host connection speed Backed by a StarTech.com 1-year warranty and free lifetime technical support Designed to fit most 1U server chassis' Complete pass through design supports the latest PCI Express speeds x16 PCI Express female connector accepts x16/x8/x4/x1 cards