how to check motherboard pci slot: How to Check Motherboard Compatibility with Graphic Card?. 3M Connectors PCIe Express Extender Assemblies. Manual Placa madre | PDF - PPT.
I know how to check how many PCI
slots are not used yet on my server, by using dmidecode and looking for
Available slots: # dmidecode [...] Handle 0x0014, DMI ...
This PCIe to PCI Adapter Card lets you use low profile PCI expansion cards in a server or desktop motherboard PCI Express
slot. Compliant with PCI Express ...
CPU Slot: LGA 1150. Motherboard Chip. Motherboard x 1. PCI-E slot: 1 x PCI-E X16 Graphics
Card Slot, 1 x PCI-E X1 Sslot. Socket: 1x4 pin, 1x24 pin power connector.