This is a EXPENSIVE Riser solution that works.
Right-angle mounting to provide low-profile (2U) height. 5 volt operation for Sun or PCI Motherboards. The unit was tested and used in a Tyan S2510 Serverworks motherboard. Dimensions: 8.409" X 2.723" (bottom of fingers to top of card) From bottom of fingers to middle of first slot = 0.9 inches; slot to slot = 0.8 inches. Retail Price: $275.00