PCIE x16 to x8+x4+x4 splitter adapter card, front and back double sides .2 NVME x2 designed.This product can run 2 NVMEs simultaneously, only if the motherboard supports PCIE signal splitting.Supports PCIE 4.0, strong compatibility and downward compatible with 3.0, stable operation.Product front and back .2 can connect to NVME 5 kinds specifications of SSD, PCIE X16 can connect to PCIE expansion card, adapter card.Front and back .2 can connect to NVME expansion and .2 NVME SFF-8639 card.Material:PCBColor:BlackSize:150x38mmInput Port:PCIE X16 ,.2 NVME x2Speed:PCIE 4.0 ,compatible with 3.0Package Contents:1x PCIE4.0 Expansion Adapter1 x screwdriverOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.