PCIe express [Gen1-3] carrier/adapter [1/2 length] for XMC with 8 lanes, built in power supplies 3.3V(15A), 5V(15A) -12V(1A+). Passive design. Supports Bezel and Rear IO [Pn4/Jn4 and Pn6/Jn6]. Options for Zero Slot fans, ROHS. Other options for 4 Lanes, 2 installed XMCs [switched design]