Dell PowerEdge R930 Owner's Manual page 170

Expansion Bus
Bus type
Expansion slots using riser card:
Riser 1 (NDC riser default)
Riser 2 (optional)
Riser 3 (optional)
NOTE: Do not install a full-height expansion card on PCIe slot 2/10.
Memory
Architecture
Memory module sockets
Memory module capacities
LRDIMMs
170
PCI Express Generation 3
(Slot 2) One full-height, half-length x8
link
(Slot 1/1) One full-height, full-length x4
link
(Slot 2/2) One full-height, half-length
x4 link
(Slot 3) One full-height, half-length x8
link
(Slot 4) One full-height, full-length x16
link
NOTE: To use slots 6 through 10,
all four processors must be
installed.
(Slot 5) One full-height, half-length x16
link
(Slot 6) One full-height, half-length x16
link
(Slot 7) One full-height, half-length x16
link
(Slot 8) One full-height, half-length x16
link
(Slot 1/ 9) One full-height, full-length
x8 link
(Slot 2/ 10) One half-height, half-
length x8 link
1333 MT/s, 1600 MT/s or 1866 MT/s DDR4
registered, load-reduced Error Correcting Code
(ECC) DIMMs
Support for advanced ECC or memory optimized
operation
Ninety-six 240-pin
32 GB quad-rank