.050 Series PCI and standard card edge connectors with a 1.27mm pitch and 64 bit Bus width. These .050 Series PCI and standard card edge connectors have 92 Dual position contacts with the following board retention features:
Stock number 718-8340 is a PCI card edge connector and has 3 x brass hold downs and a 64 bit Bus width
Stock numberss 864-3472 is PCI card edge connector which has 3 x plastic pylons and a 64 bit Bus width
Stock number 718-8255 is a dual row standard card edge connector with 2 plastic pylons, keying and a PS/2 Bus type

Edge Connectors - TE