Supermicro RSC-DR-6G4 1U RHS DCO Riser card with one PCI-E 4.0 x16 slot

Supermicro RSC-D-6G4 1U Riser Card

Dell PowerEdge R640 4/8/10 Bay 2B 1X16 Single Slot PCIe Riser Card - RGJ6V

Supermicro RSC-S-6G5 PCI-E 5.0 x16 Slot 1U LHS Standard Riser Card

SUPERMICRO B2SS2-F MICROBLADE MBI-6219G-T DUAL-NODE MOBO DUAL E3-1285V6 64GB RAM

HP PROLIANT DL360 DL380 G6 PCI EXPRESS X16 SINGLE GPU RISER CARD 496078-001

SuperMicro X9SCI-LN4F w/Xeon E3-1230, 32G (2x16G) Actica , 1U heatsink combo

Supermicro RSC-D2-668G4 2U Riser Card