The PEXP16-SX-16/1 is a PCI Express X1 lane converter.
If your motherboard only has a PCI Express X1 slot, this adapter will allow you to install a PCI Express X16 in it. However your PCI Express X16 card will run at the X1 bus speed of 500 MB/s.
The height of this adapter is 1.05"and the width is 4.24"
Please note that this lane converter may not be compatible with some higher end video cards and workstation cards. Returns for incompatibility issues are subject to 15% restocking fee.
Other combinations of lane reduction adapters are possible with slight modifications, upon request.