TYAN THUNDER I7520, D, R, RD Manual page 64

Thunder i7520 / Thunder i7520R
1U Riser Cards
M2033 Universal card edge with one PCI-X/PCI slot (with 3.3 V key)
M2037 Universal card edge with one 64-bit PCI slot (with 5 V key)
M2037R Universal card edge with one right-side 64-bit PCI slot (with 5 V key)
Appendix V: Riser Card Support
61
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